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xfs: updates for 4.4-rc1

Browse Source 
This update contains:
 o per-mount operational statistics in sysfs
 o fixes for concurrent aio append write submission
 o various logging fixes
 o detection of zeroed logs and invalid log sequence numbers on v5 filesystems
 o memory allocation failure message improvements
 o a bunch of xattr/ACL fixes
 o fdatasync optimisation
 o miscellaneous other fixes and cleanups
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Merge tag 'xfs-for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs

Pull xfs updates from Dave Chinner:
 "There is nothing really major here - the only significant addition is
  the per-mount operation statistics infrastructure.  Otherwises there's
  various ACL, xattr, DAX, AIO and logging fixes, and a smattering of
  small cleanups and fixes elsewhere.

  Summary:

   - per-mount operational statistics in sysfs
   - fixes for concurrent aio append write submission
   - various logging fixes
   - detection of zeroed logs and invalid log sequence numbers on v5 filesystems
   - memory allocation failure message improvements
   - a bunch of xattr/ACL fixes
   - fdatasync optimisation
   - miscellaneous other fixes and cleanups"

* tag 'xfs-for-linus-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (39 commits)
  xfs: give all workqueues rescuer threads
  xfs: fix log recovery op header validation assert
  xfs: Fix error path in xfs_get_acl
  xfs: optimise away log forces on timestamp updates for fdatasync
  xfs: don't leak uuid table on rmmod
  xfs: invalidate cached acl if set via ioctl
  xfs: Plug memory leak in xfs_attrmulti_attr_set
  xfs: Validate the length of on-disk ACLs
  xfs: invalidate cached acl if set directly via xattr
  xfs: xfs_filemap_pmd_fault treats read faults as write faults
  xfs: add ->pfn_mkwrite support for DAX
  xfs: DAX does not use IO completion callbacks
  xfs: Don't use unwritten extents for DAX
  xfs: introduce BMAPI_ZERO for allocating zeroed extents
  xfs: fix inode size update overflow in xfs_map_direct()
  xfs: clear PF_NOFREEZE for xfsaild kthread
  xfs: fix an error code in xfs_fs_fill_super()
  xfs: stats are no longer dependent on CONFIG_PROC_FS
  xfs: simplify /proc teardown & error handling
  xfs: per-filesystem stats counter implementation
  ...
This commit is contained in:
Linus Torvalds 2015-11-11 20:18:48 -08:00
commit 5d50ac70fe
62 changed files with 1002 additions and 419 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
fs/dax.c
View File

@ -29,6 +29,11 @@
#include <linux/uio.h>
#include <linux/vmstat.h>
/*
* dax_clear_blocks() is called from within transaction context from XFS,
* and hence this means the stack from this point must follow GFP_NOFS
* semantics for all operations.
*/
int dax_clear_blocks(struct inode *inode, sector_t block, long size)
{
struct block_device *bdev = inode->i_sb->s_bdev;

2
fs/xfs/Makefile
View File

@ -84,6 +84,7 @@ xfs-y += xfs_aops.o \
xfs_message.o \
xfs_mount.o \
xfs_mru_cache.o \
xfs_stats.o \
xfs_super.o \
xfs_symlink.o \
xfs_sysfs.o \
@ -118,7 +119,6 @@ xfs-$(CONFIG_XFS_QUOTA) += xfs_dquot.o \
xfs-$(CONFIG_XFS_RT) += xfs_rtalloc.o
xfs-$(CONFIG_XFS_POSIX_ACL) += xfs_acl.o
xfs-$(CONFIG_PROC_FS) += xfs_stats.o
xfs-$(CONFIG_SYSCTL) += xfs_sysctl.o
xfs-$(CONFIG_COMPAT) += xfs_ioctl32.o
xfs-$(CONFIG_NFSD_PNFS) += xfs_pnfs.o

10
fs/xfs/kmem.c
View File

@ -55,8 +55,9 @@ kmem_alloc(size_t size, xfs_km_flags_t flags)
return ptr;
if (!(++retries % 100))
xfs_err(NULL,
"possible memory allocation deadlock in %s (mode:0x%x)",
__func__, lflags);
"%s(%u) possible memory allocation deadlock size %u in %s (mode:0x%x)",
current->comm, current->pid,
(unsigned int)size, __func__, lflags);
congestion_wait(BLK_RW_ASYNC, HZ/50);
} while (1);
}
@ -120,8 +121,9 @@ kmem_zone_alloc(kmem_zone_t *zone, xfs_km_flags_t flags)
return ptr;
if (!(++retries % 100))
xfs_err(NULL,
"possible memory allocation deadlock in %s (mode:0x%x)",
__func__, lflags);
"%s(%u) possible memory allocation deadlock in %s (mode:0x%x)",
current->comm, current->pid,
__func__, lflags);
congestion_wait(BLK_RW_ASYNC, HZ/50);
} while (1);
}

30
fs/xfs/libxfs/xfs_alloc.c
View File

@ -482,7 +482,9 @@ xfs_agfl_verify(
be32_to_cpu(agfl->agfl_bno[i]) >= mp->m_sb.sb_agblocks)
return false;
}
return true;
return xfs_log_check_lsn(mp,
be64_to_cpu(XFS_BUF_TO_AGFL(bp)->agfl_lsn));
}
static void
@ -651,8 +653,8 @@ xfs_alloc_ag_vextent(
-((long)(args->len)));
}
XFS_STATS_INC(xs_allocx);
XFS_STATS_ADD(xs_allocb, args->len);
XFS_STATS_INC(args->mp, xs_allocx);
XFS_STATS_ADD(args->mp, xs_allocb, args->len);
return error;
}
@ -1808,8 +1810,8 @@ xfs_free_ag_extent(
if (!isfl)
xfs_trans_mod_sb(tp, XFS_TRANS_SB_FDBLOCKS, (long)len);
XFS_STATS_INC(xs_freex);
XFS_STATS_ADD(xs_freeb, len);
XFS_STATS_INC(mp, xs_freex);
XFS_STATS_ADD(mp, xs_freeb, len);
trace_xfs_free_extent(mp, agno, bno, len, isfl, haveleft, haveright);
@ -2259,9 +2261,13 @@ xfs_agf_verify(
{
struct xfs_agf *agf = XFS_BUF_TO_AGF(bp);
if (xfs_sb_version_hascrc(&mp->m_sb) &&
!uuid_equal(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid))
if (xfs_sb_version_hascrc(&mp->m_sb)) {
if (!uuid_equal(&agf->agf_uuid, &mp->m_sb.sb_meta_uuid))
return false;
if (!xfs_log_check_lsn(mp,
be64_to_cpu(XFS_BUF_TO_AGF(bp)->agf_lsn)))
return false;
}
if (!(agf->agf_magicnum == cpu_to_be32(XFS_AGF_MAGIC) &&
XFS_AGF_GOOD_VERSION(be32_to_cpu(agf->agf_versionnum)) &&
@ -2503,7 +2509,7 @@ xfs_alloc_vextent(
* Try near allocation first, then anywhere-in-ag after
* the first a.g. fails.
*/
if ((args->userdata == XFS_ALLOC_INITIAL_USER_DATA) &&
if ((args->userdata & XFS_ALLOC_INITIAL_USER_DATA) &&
(mp->m_flags & XFS_MOUNT_32BITINODES)) {
args->fsbno = XFS_AGB_TO_FSB(mp,
((mp->m_agfrotor / rotorstep) %
@ -2634,6 +2640,14 @@ xfs_alloc_vextent(
XFS_AG_CHECK_DADDR(mp, XFS_FSB_TO_DADDR(mp, args->fsbno),
args->len);
#endif
/* Zero the extent if we were asked to do so */
if (args->userdata & XFS_ALLOC_USERDATA_ZERO) {
error = xfs_zero_extent(args->ip, args->fsbno, args->len);
if (error)
goto error0;
}
}
xfs_perag_put(args->pag);
return 0;

8
fs/xfs/libxfs/xfs_alloc.h
View File

@ -101,6 +101,7 @@ typedef struct xfs_alloc_arg {
struct xfs_mount *mp; /* file system mount point */
struct xfs_buf *agbp; /* buffer for a.g. freelist header */
struct xfs_perag *pag; /* per-ag struct for this agno */
struct xfs_inode *ip; /* for userdata zeroing method */
xfs_fsblock_t fsbno; /* file system block number */
xfs_agnumber_t agno; /* allocation group number */
xfs_agblock_t agbno; /* allocation group-relative block # */
@ -120,15 +121,16 @@ typedef struct xfs_alloc_arg {
char wasdel; /* set if allocation was prev delayed */
char wasfromfl; /* set if allocation is from freelist */
char isfl; /* set if is freelist blocks - !acctg */
char userdata; /* set if this is user data */
char userdata; /* mask defining userdata treatment */
xfs_fsblock_t firstblock; /* io first block allocated */
} xfs_alloc_arg_t;
/*
* Defines for userdata
*/
#define XFS_ALLOC_USERDATA 1 /* allocation is for user data*/
#define XFS_ALLOC_INITIAL_USER_DATA 2 /* special case start of file */
#define XFS_ALLOC_USERDATA (1 << 0)/* allocation is for user data*/
#define XFS_ALLOC_INITIAL_USER_DATA (1 << 1)/* special case start of file */
#define XFS_ALLOC_USERDATA_ZERO (1 << 2)/* zero extent on allocation */
xfs_extlen_t xfs_alloc_longest_free_extent(struct xfs_mount *mp,
struct xfs_perag *pag, xfs_extlen_t need);

6
fs/xfs/libxfs/xfs_attr.c
View File

@ -125,7 +125,7 @@ xfs_attr_get(
uint lock_mode;
int error;
XFS_STATS_INC(xs_attr_get);
XFS_STATS_INC(ip->i_mount, xs_attr_get);
if (XFS_FORCED_SHUTDOWN(ip->i_mount))
return -EIO;
@ -209,7 +209,7 @@ xfs_attr_set(
int rsvd = (flags & ATTR_ROOT) != 0;
int error, err2, committed, local;
XFS_STATS_INC(xs_attr_set);
XFS_STATS_INC(mp, xs_attr_set);
if (XFS_FORCED_SHUTDOWN(dp->i_mount))
return -EIO;
@ -412,7 +412,7 @@ xfs_attr_remove(
xfs_fsblock_t firstblock;
int error;
XFS_STATS_INC(xs_attr_remove);
XFS_STATS_INC(mp, xs_attr_remove);
if (XFS_FORCED_SHUTDOWN(dp->i_mount))
return -EIO;

3
fs/xfs/libxfs/xfs_attr_leaf.c
View File

@ -41,6 +41,7 @@
#include "xfs_buf_item.h"
#include "xfs_cksum.h"
#include "xfs_dir2.h"
#include "xfs_log.h"
/*
@ -266,6 +267,8 @@ xfs_attr3_leaf_verify(
return false;
if (be64_to_cpu(hdr3->info.blkno) != bp->b_bn)
return false;
if (!xfs_log_check_lsn(mp, be64_to_cpu(hdr3->info.lsn)))
return false;
} else {
if (ichdr.magic != XFS_ATTR_LEAF_MAGIC)
return false;

2
fs/xfs/libxfs/xfs_attr_remote.c
View File

@ -107,7 +107,7 @@ xfs_attr3_rmt_verify(
if (be32_to_cpu(rmt->rm_bytes) > fsbsize - sizeof(*rmt))
return false;
if (be32_to_cpu(rmt->rm_offset) +
be32_to_cpu(rmt->rm_bytes) > XATTR_SIZE_MAX)
be32_to_cpu(rmt->rm_bytes) > XFS_XATTR_SIZE_MAX)
return false;
if (rmt->rm_owner == 0)
return false;

65
fs/xfs/libxfs/xfs_bmap.c
View File

@ -948,14 +948,16 @@ xfs_bmap_local_to_extents(
bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0);
/*
* Initialise the block and copy the data
* Initialize the block, copy the data and log the remote buffer.
*
* Note: init_fn must set the buffer log item type correctly!
* The callout is responsible for logging because the remote format
* might differ from the local format and thus we don't know how much to
* log here. Note that init_fn must also set the buffer log item type
* correctly.
*/
init_fn(tp, bp, ip, ifp);
/* account for the change in fork size and log everything */
xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
/* account for the change in fork size */
xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
xfs_bmap_local_to_extents_empty(ip, whichfork);
flags |= XFS_ILOG_CORE;
@ -1435,7 +1437,7 @@ xfs_bmap_search_extents(
xfs_ifork_t *ifp; /* inode fork pointer */
xfs_bmbt_rec_host_t *ep; /* extent record pointer */
XFS_STATS_INC(xs_look_exlist);
XFS_STATS_INC(ip->i_mount, xs_look_exlist);
ifp = XFS_IFORK_PTR(ip, fork);
ep = xfs_bmap_search_multi_extents(ifp, bno, eofp, lastxp, gotp, prevp);
@ -1732,7 +1734,7 @@ xfs_bmap_add_extent_delay_real(
ASSERT(!bma->cur ||
(bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL));
XFS_STATS_INC(xs_add_exlist);
XFS_STATS_INC(mp, xs_add_exlist);
#define LEFT r[0]
#define RIGHT r[1]
@ -2286,7 +2288,7 @@ xfs_bmap_add_extent_unwritten_real(
ASSERT(*idx <= ifp->if_bytes / sizeof(struct xfs_bmbt_rec));
ASSERT(!isnullstartblock(new->br_startblock));
XFS_STATS_INC(xs_add_exlist);
XFS_STATS_INC(mp, xs_add_exlist);
#define LEFT r[0]
#define RIGHT r[1]
@ -2946,7 +2948,7 @@ xfs_bmap_add_extent_hole_real(
ASSERT(!bma->cur ||
!(bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL));
XFS_STATS_INC(xs_add_exlist);
XFS_STATS_INC(mp, xs_add_exlist);
state = 0;
if (whichfork == XFS_ATTR_FORK)
@ -3800,8 +3802,13 @@ xfs_bmap_btalloc(
args.wasdel = ap->wasdel;
args.isfl = 0;
args.userdata = ap->userdata;
if ((error = xfs_alloc_vextent(&args)))
if (ap->userdata & XFS_ALLOC_USERDATA_ZERO)
args.ip = ap->ip;
error = xfs_alloc_vextent(&args);
if (error)
return error;
if (tryagain && args.fsbno == NULLFSBLOCK) {
/*
* Exact allocation failed. Now try with alignment
@ -4036,7 +4043,7 @@ xfs_bmapi_read(
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
XFS_STATS_INC(xs_blk_mapr);
XFS_STATS_INC(mp, xs_blk_mapr);
ifp = XFS_IFORK_PTR(ip, whichfork);
@ -4221,7 +4228,7 @@ xfs_bmapi_delay(
if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
XFS_STATS_INC(xs_blk_mapw);
XFS_STATS_INC(mp, xs_blk_mapw);
if (!(ifp->if_flags & XFS_IFEXTENTS)) {
error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK);
@ -4300,11 +4307,14 @@ xfs_bmapi_allocate(
/*
* Indicate if this is the first user data in the file, or just any
* user data.
* user data. And if it is userdata, indicate whether it needs to
* be initialised to zero during allocation.
*/
if (!(bma->flags & XFS_BMAPI_METADATA)) {
bma->userdata = (bma->offset == 0) ?
XFS_ALLOC_INITIAL_USER_DATA : XFS_ALLOC_USERDATA;
if (bma->flags & XFS_BMAPI_ZERO)
bma->userdata |= XFS_ALLOC_USERDATA_ZERO;
}
bma->minlen = (bma->flags & XFS_BMAPI_CONTIG) ? bma->length : 1;
@ -4419,6 +4429,17 @@ xfs_bmapi_convert_unwritten(
mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN)
? XFS_EXT_NORM : XFS_EXT_UNWRITTEN;
/*
* Before insertion into the bmbt, zero the range being converted
* if required.
*/
if (flags & XFS_BMAPI_ZERO) {
error = xfs_zero_extent(bma->ip, mval->br_startblock,
mval->br_blockcount);
if (error)
return error;
}
error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, &bma->idx,
&bma->cur, mval, bma->firstblock, bma->flist,
&tmp_logflags);
@ -4512,6 +4533,18 @@ xfs_bmapi_write(
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
/* zeroing is for currently only for data extents, not metadata */
ASSERT((flags & (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)) !=
(XFS_BMAPI_METADATA | XFS_BMAPI_ZERO));
/*
* we can allocate unwritten extents or pre-zero allocated blocks,
* but it makes no sense to do both at once. This would result in
* zeroing the unwritten extent twice, but it still being an
* unwritten extent....
*/
ASSERT((flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)) !=
(XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO));
if (unlikely(XFS_TEST_ERROR(
(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS &&
XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE),
@ -4525,7 +4558,7 @@ xfs_bmapi_write(
ifp = XFS_IFORK_PTR(ip, whichfork);
XFS_STATS_INC(xs_blk_mapw);
XFS_STATS_INC(mp, xs_blk_mapw);
if (*firstblock == NULLFSBLOCK) {
if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE)
@ -4718,12 +4751,12 @@ xfs_bmap_del_extent(
xfs_filblks_t temp2; /* for indirect length calculations */
int state = 0;
XFS_STATS_INC(xs_del_exlist);
mp = ip->i_mount;
XFS_STATS_INC(mp, xs_del_exlist);
if (whichfork == XFS_ATTR_FORK)
state |= BMAP_ATTRFORK;
mp = ip->i_mount;
ifp = XFS_IFORK_PTR(ip, whichfork);
ASSERT((*idx >= 0) && (*idx < ifp->if_bytes /
(uint)sizeof(xfs_bmbt_rec_t)));
@ -5070,7 +5103,7 @@ xfs_bunmapi(
*done = 1;
return 0;
}
XFS_STATS_INC(xs_blk_unmap);
XFS_STATS_INC(mp, xs_blk_unmap);
isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip);
start = bno;
bno = start + len - 1;

13
fs/xfs/libxfs/xfs_bmap.h
View File

@ -52,9 +52,9 @@ struct xfs_bmalloca {
xfs_extlen_t minleft; /* amount must be left after alloc */
bool eof; /* set if allocating past last extent */
bool wasdel; /* replacing a delayed allocation */
bool userdata;/* set if is user data */
bool aeof; /* allocated space at eof */
bool conv; /* overwriting unwritten extents */
char userdata;/* userdata mask */
int flags;
};
@ -109,6 +109,14 @@ typedef struct xfs_bmap_free
*/
#define XFS_BMAPI_CONVERT 0x040
/*
* allocate zeroed extents - this requires all newly allocated user data extents
* to be initialised to zero. It will be ignored if XFS_BMAPI_METADATA is set.
* Use in conjunction with XFS_BMAPI_CONVERT to convert unwritten extents found
* during the allocation range to zeroed written extents.
*/
#define XFS_BMAPI_ZERO 0x080
#define XFS_BMAPI_FLAGS \
{ XFS_BMAPI_ENTIRE, "ENTIRE" }, \
{ XFS_BMAPI_METADATA, "METADATA" }, \
@ -116,7 +124,8 @@ typedef struct xfs_bmap_free
{ XFS_BMAPI_PREALLOC, "PREALLOC" }, \
{ XFS_BMAPI_IGSTATE, "IGSTATE" }, \
{ XFS_BMAPI_CONTIG, "CONTIG" }, \
{ XFS_BMAPI_CONVERT, "CONVERT" }
{ XFS_BMAPI_CONVERT, "CONVERT" }, \
{ XFS_BMAPI_ZERO, "ZERO" }
static inline int xfs_bmapi_aflag(int w)

21
fs/xfs/libxfs/xfs_btree.c
View File

@ -32,6 +32,7 @@
#include "xfs_trace.h"
#include "xfs_cksum.h"
#include "xfs_alloc.h"
#include "xfs_log.h"
/*
* Cursor allocation zone.
@ -222,7 +223,7 @@ xfs_btree_check_ptr(
* long-form btree header.
*
* Prior to calculting the CRC, pull the LSN out of the buffer log item and put
* it into the buffer so recovery knows what the last modifcation was that made
* it into the buffer so recovery knows what the last modification was that made
* it to disk.
*/
void
@ -243,8 +244,14 @@ bool
xfs_btree_lblock_verify_crc(
struct xfs_buf *bp)
{
if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
struct xfs_mount *mp = bp->b_target->bt_mount;
if (xfs_sb_version_hascrc(&mp->m_sb)) {
if (!xfs_log_check_lsn(mp, be64_to_cpu(block->bb_u.l.bb_lsn)))
return false;
return xfs_buf_verify_cksum(bp, XFS_BTREE_LBLOCK_CRC_OFF);
}
return true;
}
@ -254,7 +261,7 @@ xfs_btree_lblock_verify_crc(
* short-form btree header.
*
* Prior to calculting the CRC, pull the LSN out of the buffer log item and put
* it into the buffer so recovery knows what the last modifcation was that made
* it into the buffer so recovery knows what the last modification was that made
* it to disk.
*/
void
@ -275,8 +282,14 @@ bool
xfs_btree_sblock_verify_crc(
struct xfs_buf *bp)
{
if (xfs_sb_version_hascrc(&bp->b_target->bt_mount->m_sb))
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
struct xfs_mount *mp = bp->b_target->bt_mount;
if (xfs_sb_version_hascrc(&mp->m_sb)) {
if (!xfs_log_check_lsn(mp, be64_to_cpu(block->bb_u.s.bb_lsn)))
return false;
return xfs_buf_verify_cksum(bp, XFS_BTREE_SBLOCK_CRC_OFF);
}
return true;
}

39
fs/xfs/libxfs/xfs_btree.h
View File

@ -84,31 +84,38 @@ union xfs_btree_rec {
/*
* Generic stats interface
*/
#define __XFS_BTREE_STATS_INC(type, stat) \
XFS_STATS_INC(xs_ ## type ## _2_ ## stat)
#define XFS_BTREE_STATS_INC(cur, stat) \
#define __XFS_BTREE_STATS_INC(mp, type, stat) \
XFS_STATS_INC(mp, xs_ ## type ## _2_ ## stat)
#define XFS_BTREE_STATS_INC(cur, stat) \
do { \
struct xfs_mount *__mp = cur->bc_mp; \
switch (cur->bc_btnum) { \
case XFS_BTNUM_BNO: __XFS_BTREE_STATS_INC(abtb, stat); break; \
case XFS_BTNUM_CNT: __XFS_BTREE_STATS_INC(abtc, stat); break; \
case XFS_BTNUM_BMAP: __XFS_BTREE_STATS_INC(bmbt, stat); break; \
case XFS_BTNUM_INO: __XFS_BTREE_STATS_INC(ibt, stat); break; \
case XFS_BTNUM_FINO: __XFS_BTREE_STATS_INC(fibt, stat); break; \
case XFS_BTNUM_BNO: __XFS_BTREE_STATS_INC(__mp, abtb, stat); break; \
case XFS_BTNUM_CNT: __XFS_BTREE_STATS_INC(__mp, abtc, stat); break; \
case XFS_BTNUM_BMAP: __XFS_BTREE_STATS_INC(__mp, bmbt, stat); break; \
case XFS_BTNUM_INO: __XFS_BTREE_STATS_INC(__mp, ibt, stat); break; \
case XFS_BTNUM_FINO: __XFS_BTREE_STATS_INC(__mp, fibt, stat); break; \
case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
} \
} while (0)
#define __XFS_BTREE_STATS_ADD(type, stat, val) \
XFS_STATS_ADD(xs_ ## type ## _2_ ## stat, val)
#define __XFS_BTREE_STATS_ADD(mp, type, stat, val) \
XFS_STATS_ADD(mp, xs_ ## type ## _2_ ## stat, val)
#define XFS_BTREE_STATS_ADD(cur, stat, val) \
do { \
struct xfs_mount *__mp = cur->bc_mp; \
switch (cur->bc_btnum) { \
case XFS_BTNUM_BNO: __XFS_BTREE_STATS_ADD(abtb, stat, val); break; \
case XFS_BTNUM_CNT: __XFS_BTREE_STATS_ADD(abtc, stat, val); break; \
case XFS_BTNUM_BMAP: __XFS_BTREE_STATS_ADD(bmbt, stat, val); break; \
case XFS_BTNUM_INO: __XFS_BTREE_STATS_ADD(ibt, stat, val); break; \
case XFS_BTNUM_FINO: __XFS_BTREE_STATS_ADD(fibt, stat, val); break; \
case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
case XFS_BTNUM_BNO: \
__XFS_BTREE_STATS_ADD(__mp, abtb, stat, val); break; \
case XFS_BTNUM_CNT: \
__XFS_BTREE_STATS_ADD(__mp, abtc, stat, val); break; \
case XFS_BTNUM_BMAP: \
__XFS_BTREE_STATS_ADD(__mp, bmbt, stat, val); break; \
case XFS_BTNUM_INO: \
__XFS_BTREE_STATS_ADD(__mp, ibt, stat, val); break; \
case XFS_BTNUM_FINO: \
__XFS_BTREE_STATS_ADD(__mp, fibt, stat, val); break; \
case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
} \
} while (0)

4
fs/xfs/libxfs/xfs_da_btree.c
View File

@ -39,6 +39,7 @@
#include "xfs_trace.h"
#include "xfs_cksum.h"
#include "xfs_buf_item.h"
#include "xfs_log.h"
/*
* xfs_da_btree.c
@ -150,6 +151,8 @@ xfs_da3_node_verify(
return false;
if (be64_to_cpu(hdr3->info.blkno) != bp->b_bn)
return false;
if (!xfs_log_check_lsn(mp, be64_to_cpu(hdr3->info.lsn)))
return false;
} else {
if (ichdr.magic != XFS_DA_NODE_MAGIC)
return false;
@ -322,6 +325,7 @@ xfs_da3_node_create(
if (xfs_sb_version_hascrc(&mp->m_sb)) {
struct xfs_da3_node_hdr *hdr3 = bp->b_addr;
memset(hdr3, 0, sizeof(struct xfs_da3_node_hdr));
ichdr.magic = XFS_DA3_NODE_MAGIC;
hdr3->info.blkno = cpu_to_be64(bp->b_bn);
hdr3->info.owner = cpu_to_be64(args->dp->i_ino);

6
fs/xfs/libxfs/xfs_dir2.c
View File

@ -271,7 +271,7 @@ xfs_dir_createname(
rval = xfs_dir_ino_validate(tp->t_mountp, inum);
if (rval)
return rval;
XFS_STATS_INC(xs_dir_create);
XFS_STATS_INC(dp->i_mount, xs_dir_create);
}
args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
@ -365,7 +365,7 @@ xfs_dir_lookup(
int lock_mode;
ASSERT(S_ISDIR(dp->i_d.di_mode));
XFS_STATS_INC(xs_dir_lookup);
XFS_STATS_INC(dp->i_mount, xs_dir_lookup);
/*
* We need to use KM_NOFS here so that lockdep will not throw false
@ -444,7 +444,7 @@ xfs_dir_removename(
int v; /* type-checking value */
ASSERT(S_ISDIR(dp->i_d.di_mode));
XFS_STATS_INC(xs_dir_remove);
XFS_STATS_INC(dp->i_mount, xs_dir_remove);
args = kmem_zalloc(sizeof(*args), KM_SLEEP | KM_NOFS);
if (!args)

3
fs/xfs/libxfs/xfs_dir2_block.c
View File

@ -34,6 +34,7 @@
#include "xfs_error.h"
#include "xfs_trace.h"
#include "xfs_cksum.h"
#include "xfs_log.h"
/*
* Local function prototypes.
@ -71,6 +72,8 @@ xfs_dir3_block_verify(
return false;
if (be64_to_cpu(hdr3->blkno) != bp->b_bn)
return false;
if (!xfs_log_check_lsn(mp, be64_to_cpu(hdr3->lsn)))
return false;
} else {
if (hdr3->magic != cpu_to_be32(XFS_DIR2_BLOCK_MAGIC))
return false;

3
fs/xfs/libxfs/xfs_dir2_data.c
View File

@ -31,6 +31,7 @@
#include "xfs_trans.h"
#include "xfs_buf_item.h"
#include "xfs_cksum.h"
#include "xfs_log.h"
/*
* Check the consistency of the data block.
@ -224,6 +225,8 @@ xfs_dir3_data_verify(
return false;
if (be64_to_cpu(hdr3->blkno) != bp->b_bn)
return false;
if (!xfs_log_check_lsn(mp, be64_to_cpu(hdr3->lsn)))
return false;
} else {
if (hdr3->magic != cpu_to_be32(XFS_DIR2_DATA_MAGIC))
return false;

3
fs/xfs/libxfs/xfs_dir2_leaf.c
View File

@ -33,6 +33,7 @@
#include "xfs_trans.h"
#include "xfs_buf_item.h"
#include "xfs_cksum.h"
#include "xfs_log.h"
/*
* Local function declarations.
@ -164,6 +165,8 @@ xfs_dir3_leaf_verify(
return false;
if (be64_to_cpu(leaf3->info.blkno) != bp->b_bn)
return false;
if (!xfs_log_check_lsn(mp, be64_to_cpu(leaf3->info.lsn)))
return false;
} else {
if (leaf->hdr.info.magic != cpu_to_be16(magic))
return false;

3
fs/xfs/libxfs/xfs_dir2_node.c
View File

@ -33,6 +33,7 @@
#include "xfs_trans.h"
#include "xfs_buf_item.h"
#include "xfs_cksum.h"
#include "xfs_log.h"
/*
* Function declarations.
@ -97,6 +98,8 @@ xfs_dir3_free_verify(
return false;
if (be64_to_cpu(hdr3->blkno) != bp->b_bn)
return false;
if (!xfs_log_check_lsn(mp, be64_to_cpu(hdr3->lsn)))
return false;
} else {
if (hdr->magic != cpu_to_be32(XFS_DIR2_FREE_MAGIC))
return false;

18
fs/xfs/libxfs/xfs_format.h
View File

@ -59,6 +59,14 @@ struct xfs_ifork;
#define XFS_SB_VERSION_BORGBIT 0x4000 /* ASCII only case-insens. */
#define XFS_SB_VERSION_MOREBITSBIT 0x8000
/*
* The size of a single extended attribute on disk is limited by
* the size of index values within the attribute entries themselves.
* These are be16 fields, so we can only support attribute data
* sizes up to 2^16 bytes in length.
*/
#define XFS_XATTR_SIZE_MAX (1 << 16)
/*
* Supported feature bit list is just all bits in the versionnum field because
* we've used them all up and understand them all. Except, of course, for the
@ -1483,13 +1491,17 @@ struct xfs_acl {
*/
#define XFS_ACL_MAX_ENTRIES(mp) \
(xfs_sb_version_hascrc(&mp->m_sb) \
? (XATTR_SIZE_MAX - sizeof(struct xfs_acl)) / \
? (XFS_XATTR_SIZE_MAX - sizeof(struct xfs_acl)) / \
sizeof(struct xfs_acl_entry) \
: 25)
#define XFS_ACL_MAX_SIZE(mp) \
#define XFS_ACL_SIZE(cnt) \
(sizeof(struct xfs_acl) + \
sizeof(struct xfs_acl_entry) * XFS_ACL_MAX_ENTRIES((mp)))
sizeof(struct xfs_acl_entry) * cnt)
#define XFS_ACL_MAX_SIZE(mp) \
XFS_ACL_SIZE(XFS_ACL_MAX_ENTRIES((mp)))
/* On-disk XFS extended attribute names */
#define SGI_ACL_FILE "SGI_ACL_FILE"

10
fs/xfs/libxfs/xfs_fs.h
View File

@ -489,6 +489,16 @@ typedef struct xfs_swapext
#define XFS_FSOP_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
#define XFS_FSOP_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */
/*
* ioctl limits
*/
#ifdef XATTR_LIST_MAX
# define XFS_XATTR_LIST_MAX XATTR_LIST_MAX
#else
# define XFS_XATTR_LIST_MAX 65536
#endif
/*
* ioctl commands that are used by Linux filesystems
*/

10
fs/xfs/libxfs/xfs_ialloc.c
View File

@ -38,6 +38,7 @@
#include "xfs_icreate_item.h"
#include "xfs_icache.h"
#include "xfs_trace.h"
#include "xfs_log.h"
/*
@ -2500,9 +2501,14 @@ xfs_agi_verify(
struct xfs_mount *mp = bp->b_target->bt_mount;
struct xfs_agi *agi = XFS_BUF_TO_AGI(bp);
if (xfs_sb_version_hascrc(&mp->m_sb) &&
!uuid_equal(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid))
if (xfs_sb_version_hascrc(&mp->m_sb)) {
if (!uuid_equal(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid))
return false;
if (!xfs_log_check_lsn(mp,
be64_to_cpu(XFS_BUF_TO_AGI(bp)->agi_lsn)))
return false;
}
/*
* Validate the magic number of the agi block.
*/

10
fs/xfs/libxfs/xfs_sb.c
View File

@ -35,6 +35,7 @@
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "xfs_log.h"
/*
* Physical superblock buffer manipulations. Shared with libxfs in userspace.
@ -163,6 +164,15 @@ xfs_mount_validate_sb(
"Filesystem can not be safely mounted by this kernel.");
return -EINVAL;
}
} else if (xfs_sb_version_hascrc(sbp)) {
/*
* We can't read verify the sb LSN because the read verifier is
* called before the log is allocated and processed. We know the
* log is set up before write verifier (!check_version) calls,
* so just check it here.
*/
if (!xfs_log_check_lsn(mp, sbp->sb_lsn))
return -EFSCORRUPTED;
}
if (xfs_sb_version_has_pquotino(sbp)) {

7
fs/xfs/libxfs/xfs_symlink_remote.c
View File

@ -31,6 +31,7 @@
#include "xfs_cksum.h"
#include "xfs_trans.h"
#include "xfs_buf_item.h"
#include "xfs_log.h"
/*
@ -60,6 +61,7 @@ xfs_symlink_hdr_set(
if (!xfs_sb_version_hascrc(&mp->m_sb))
return 0;
memset(dsl, 0, sizeof(struct xfs_dsymlink_hdr));
dsl->sl_magic = cpu_to_be32(XFS_SYMLINK_MAGIC);
dsl->sl_offset = cpu_to_be32(offset);
dsl->sl_bytes = cpu_to_be32(size);
@ -116,6 +118,8 @@ xfs_symlink_verify(
return false;
if (dsl->sl_owner == 0)
return false;
if (!xfs_log_check_lsn(mp, be64_to_cpu(dsl->sl_lsn)))
return false;
return true;
}
@ -183,6 +187,7 @@ xfs_symlink_local_to_remote(
if (!xfs_sb_version_hascrc(&mp->m_sb)) {
bp->b_ops = NULL;
memcpy(bp->b_addr, ifp->if_u1.if_data, ifp->if_bytes);
xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
return;
}
@ -198,4 +203,6 @@ xfs_symlink_local_to_remote(
buf = bp->b_addr;
buf += xfs_symlink_hdr_set(mp, ip->i_ino, 0, ifp->if_bytes, bp);
memcpy(buf, ifp->if_u1.if_data, ifp->if_bytes);
xfs_trans_log_buf(tp, bp, 0, sizeof(struct xfs_dsymlink_hdr) +
ifp->if_bytes - 1);
}

14
fs/xfs/xfs_acl.c
View File

@ -37,16 +37,19 @@
STATIC struct posix_acl *
xfs_acl_from_disk(
struct xfs_acl *aclp,
int max_entries)
const struct xfs_acl *aclp,
int len,
int max_entries)
{
struct posix_acl_entry *acl_e;
struct posix_acl *acl;
struct xfs_acl_entry *ace;
const struct xfs_acl_entry *ace;
unsigned int count, i;
if (len < sizeof(*aclp))
return ERR_PTR(-EFSCORRUPTED);
count = be32_to_cpu(aclp->acl_cnt);
if (count > max_entries)
if (count > max_entries || XFS_ACL_SIZE(count) != len)
return ERR_PTR(-EFSCORRUPTED);
acl = posix_acl_alloc(count, GFP_KERNEL);
@ -160,10 +163,11 @@ xfs_get_acl(struct inode *inode, int type)
*/
if (error == -ENOATTR)
goto out_update_cache;
acl = ERR_PTR(error);
goto out;
}
acl = xfs_acl_from_disk(xfs_acl, XFS_ACL_MAX_ENTRIES(ip->i_mount));
acl = xfs_acl_from_disk(xfs_acl, len, XFS_ACL_MAX_ENTRIES(ip->i_mount));
if (IS_ERR(acl))
goto out;

4
fs/xfs/xfs_acl.h
View File

@ -20,7 +20,6 @@
struct inode;
struct posix_acl;
struct xfs_inode;
#ifdef CONFIG_XFS_POSIX_ACL
extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
@ -36,4 +35,7 @@ static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type)
# define posix_acl_access_exists(inode) 0
# define posix_acl_default_exists(inode) 0
#endif /* CONFIG_XFS_POSIX_ACL */
extern void xfs_forget_acl(struct inode *inode, const char *name, int xflags);
#endif /* __XFS_ACL_H__ */

119
fs/xfs/xfs_aops.c
View File

@ -172,6 +172,12 @@ xfs_setfilesize_ioend(
current_set_flags_nested(&tp->t_pflags, PF_FSTRANS);
__sb_writers_acquired(VFS_I(ip)->i_sb, SB_FREEZE_FS);
/* we abort the update if there was an IO error */
if (ioend->io_error) {
xfs_trans_cancel(tp);
return ioend->io_error;
}
return xfs_setfilesize(ip, tp, ioend->io_offset, ioend->io_size);
}
@ -212,14 +218,17 @@ xfs_end_io(
ioend->io_error = -EIO;
goto done;
}
if (ioend->io_error)
goto done;
/*
* For unwritten extents we need to issue transactions to convert a
* range to normal written extens after the data I/O has finished.
* Detecting and handling completion IO errors is done individually
* for each case as different cleanup operations need to be performed
* on error.
*/
if (ioend->io_type == XFS_IO_UNWRITTEN) {
if (ioend->io_error)
goto done;
error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
ioend->io_size);
} else if (ioend->io_append_trans) {
@ -1250,13 +1259,28 @@ xfs_vm_releasepage(
* the DIO. There is only going to be one reference to the ioend and its life
* cycle is constrained by the DIO completion code. hence we don't need
* reference counting here.
*
* Note that for DIO, an IO to the highest supported file block offset (i.e.
* 2^63 - 1FSB bytes) will result in the offset + count overflowing a signed 64
* bit variable. Hence if we see this overflow, we have to assume that the IO is
* extending the file size. We won't know for sure until IO completion is run
* and the actual max write offset is communicated to the IO completion
* routine.
*
* For DAX page faults, we are preparing to never see unwritten extents here,
* nor should we ever extend the inode size. Hence we will soon have nothing to
* do here for this case, ensuring we don't have to provide an IO completion
* callback to free an ioend that we don't actually need for a fault into the
* page at offset (2^63 - 1FSB) bytes.
*/
static void
xfs_map_direct(
struct inode *inode,
struct buffer_head *bh_result,
struct xfs_bmbt_irec *imap,
xfs_off_t offset)
xfs_off_t offset,
bool dax_fault)
{
struct xfs_ioend *ioend;
xfs_off_t size = bh_result->b_size;
@ -1269,6 +1293,13 @@ xfs_map_direct(
trace_xfs_gbmap_direct(XFS_I(inode), offset, size, type, imap);
if (dax_fault) {
ASSERT(type == XFS_IO_OVERWRITE);
trace_xfs_gbmap_direct_none(XFS_I(inode), offset, size, type,
imap);
return;
}
if (bh_result->b_private) {
ioend = bh_result->b_private;
ASSERT(ioend->io_size > 0);
@ -1283,7 +1314,8 @@ xfs_map_direct(
ioend->io_size, ioend->io_type,
imap);
} else if (type == XFS_IO_UNWRITTEN ||
offset + size > i_size_read(inode)) {
offset + size > i_size_read(inode) ||
offset + size < 0) {
ioend = xfs_alloc_ioend(inode, type);
ioend->io_offset = offset;
ioend->io_size = size;
@ -1345,7 +1377,8 @@ __xfs_get_blocks(
sector_t iblock,
struct buffer_head *bh_result,
int create,
bool direct)
bool direct,
bool dax_fault)
{
struct xfs_inode *ip = XFS_I(inode);
struct xfs_mount *mp = ip->i_mount;
@ -1393,18 +1426,20 @@ __xfs_get_blocks(
if (error)
goto out_unlock;
/* for DAX, we convert unwritten extents directly */
if (create &&
(!nimaps ||
(imap.br_startblock == HOLESTARTBLOCK ||
imap.br_startblock == DELAYSTARTBLOCK))) {
imap.br_startblock == DELAYSTARTBLOCK) ||
(IS_DAX(inode) && ISUNWRITTEN(&imap)))) {
if (direct || xfs_get_extsz_hint(ip)) {
/*
* Drop the ilock in preparation for starting the block
* allocation transaction. It will be retaken
* exclusively inside xfs_iomap_write_direct for the
* actual allocation.
* xfs_iomap_write_direct() expects the shared lock. It
* is unlocked on return.
*/
xfs_iunlock(ip, lockmode);
if (lockmode == XFS_ILOCK_EXCL)
xfs_ilock_demote(ip, lockmode);
error = xfs_iomap_write_direct(ip, offset, size,
&imap, nimaps);
if (error)
@ -1441,6 +1476,12 @@ __xfs_get_blocks(
goto out_unlock;
}
if (IS_DAX(inode) && create) {
ASSERT(!ISUNWRITTEN(&imap));
/* zeroing is not needed at a higher layer */
new = 0;
}
/* trim mapping down to size requested */
if (direct || size > (1 << inode->i_blkbits))
xfs_map_trim_size(inode, iblock, bh_result,
@ -1458,7 +1499,8 @@ __xfs_get_blocks(
set_buffer_unwritten(bh_result);
/* direct IO needs special help */
if (create && direct)
xfs_map_direct(inode, bh_result, &imap, offset);
xfs_map_direct(inode, bh_result, &imap, offset,
dax_fault);
}
/*
@ -1505,7 +1547,7 @@ xfs_get_blocks(
struct buffer_head *bh_result,
int create)
{
return __xfs_get_blocks(inode, iblock, bh_result, create, false);
return __xfs_get_blocks(inode, iblock, bh_result, create, false, false);
}
int
@ -1515,7 +1557,17 @@ xfs_get_blocks_direct(
struct buffer_head *bh_result,
int create)
{
return __xfs_get_blocks(inode, iblock, bh_result, create, true);
return __xfs_get_blocks(inode, iblock, bh_result, create, true, false);
}
int
xfs_get_blocks_dax_fault(
struct inode *inode,
sector_t iblock,
struct buffer_head *bh_result,
int create)
{
return __xfs_get_blocks(inode, iblock, bh_result, create, true, true);
}
static void
@ -1614,45 +1666,6 @@ xfs_end_io_direct_write(
__xfs_end_io_direct_write(inode, ioend, offset, size);
}
/*
* For DAX we need a mapping buffer callback for unwritten extent conversion
* when page faults allocate blocks and then zero them. Note that in this
* case the mapping indicated by the ioend may extend beyond EOF. We most
* definitely do not want to extend EOF here, so we trim back the ioend size to
* EOF.
*/
#ifdef CONFIG_FS_DAX
void
xfs_end_io_dax_write(
struct buffer_head *bh,
int uptodate)
{
struct xfs_ioend *ioend = bh->b_private;
struct inode *inode = ioend->io_inode;
ssize_t size = ioend->io_size;
ASSERT(IS_DAX(ioend->io_inode));
/* if there was an error zeroing, then don't convert it */
if (!uptodate)
ioend->io_error = -EIO;
/*
* Trim update to EOF, so we don't extend EOF during unwritten extent
* conversion of partial EOF blocks.
*/
spin_lock(&XFS_I(inode)->i_flags_lock);
if (ioend->io_offset + size > i_size_read(inode))
size = i_size_read(inode) - ioend->io_offset;
spin_unlock(&XFS_I(inode)->i_flags_lock);
__xfs_end_io_direct_write(inode, ioend, ioend->io_offset, size);
}
#else
void xfs_end_io_dax_write(struct buffer_head *bh, int uptodate) { }
#endif
static inline ssize_t
xfs_vm_do_dio(
struct inode *inode,

3
fs/xfs/xfs_aops.h
View File

@ -58,7 +58,8 @@ int xfs_get_blocks(struct inode *inode, sector_t offset,
struct buffer_head *map_bh, int create);
int xfs_get_blocks_direct(struct inode *inode, sector_t offset,
struct buffer_head *map_bh, int create);
void xfs_end_io_dax_write(struct buffer_head *bh, int uptodate);
int xfs_get_blocks_dax_fault(struct inode *inode, sector_t offset,
struct buffer_head *map_bh, int create);
extern void xfs_count_page_state(struct page *, int *, int *);

2
fs/xfs/xfs_attr_list.c
View File

@ -511,7 +511,7 @@ xfs_attr_list_int(
xfs_inode_t *dp = context->dp;
uint lock_mode;
XFS_STATS_INC(xs_attr_list);
XFS_STATS_INC(dp->i_mount, xs_attr_list);
if (XFS_FORCED_SHUTDOWN(dp->i_mount))
return -EIO;

38
fs/xfs/xfs_bmap_util.c
View File

@ -56,6 +56,35 @@ xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
XFS_FSB_TO_DADDR((ip)->i_mount, (fsb)));
}
/*
* Routine to zero an extent on disk allocated to the specific inode.
*
* The VFS functions take a linearised filesystem block offset, so we have to
* convert the sparse xfs fsb to the right format first.
* VFS types are real funky, too.
*/
int
xfs_zero_extent(
struct xfs_inode *ip,
xfs_fsblock_t start_fsb,
xfs_off_t count_fsb)
{
struct xfs_mount *mp = ip->i_mount;
xfs_daddr_t sector = xfs_fsb_to_db(ip, start_fsb);
sector_t block = XFS_BB_TO_FSBT(mp, sector);
ssize_t size = XFS_FSB_TO_B(mp, count_fsb);
if (IS_DAX(VFS_I(ip)))
return dax_clear_blocks(VFS_I(ip), block, size);
/*
* let the block layer decide on the fastest method of
* implementing the zeroing.
*/
return sb_issue_zeroout(mp->m_super, block, count_fsb, GFP_NOFS);
}
/*
* Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi
* caller. Frees all the extents that need freeing, which must be done
@ -229,6 +258,13 @@ xfs_bmap_rtalloc(
xfs_trans_mod_dquot_byino(ap->tp, ap->ip,
ap->wasdel ? XFS_TRANS_DQ_DELRTBCOUNT :
XFS_TRANS_DQ_RTBCOUNT, (long) ralen);
/* Zero the extent if we were asked to do so */
if (ap->userdata & XFS_ALLOC_USERDATA_ZERO) {
error = xfs_zero_extent(ap->ip, ap->blkno, ap->length);
if (error)
return error;
}
} else {
ap->length = 0;
}
@ -1027,7 +1063,7 @@ xfs_alloc_file_space(
xfs_bmap_init(&free_list, &firstfsb);
error = xfs_bmapi_write(tp, ip, startoffset_fsb,
allocatesize_fsb, alloc_type, &firstfsb,
0, imapp, &nimaps, &free_list);
resblks, imapp, &nimaps, &free_list);
if (error) {
goto error0;
}

21
fs/xfs/xfs_buf.c
View File

@ -201,7 +201,7 @@ _xfs_buf_alloc(
atomic_set(&bp->b_pin_count, 0);
init_waitqueue_head(&bp->b_waiters);
XFS_STATS_INC(xb_create);
XFS_STATS_INC(target->bt_mount, xb_create);
trace_xfs_buf_init(bp, _RET_IP_);
return bp;
@ -354,15 +354,16 @@ retry:
*/
if (!(++retries % 100))
xfs_err(NULL,
"possible memory allocation deadlock in %s (mode:0x%x)",
"%s(%u) possible memory allocation deadlock in %s (mode:0x%x)",
current->comm, current->pid,
__func__, gfp_mask);
XFS_STATS_INC(xb_page_retries);
XFS_STATS_INC(bp->b_target->bt_mount, xb_page_retries);
congestion_wait(BLK_RW_ASYNC, HZ/50);
goto retry;
}
XFS_STATS_INC(xb_page_found);
XFS_STATS_INC(bp->b_target->bt_mount, xb_page_found);
nbytes = min_t(size_t, size, PAGE_SIZE - offset);
size -= nbytes;
@ -516,7 +517,7 @@ _xfs_buf_find(
new_bp->b_pag = pag;
spin_unlock(&pag->pag_buf_lock);
} else {
XFS_STATS_INC(xb_miss_locked);
XFS_STATS_INC(btp->bt_mount, xb_miss_locked);
spin_unlock(&pag->pag_buf_lock);
xfs_perag_put(pag);
}
@ -529,11 +530,11 @@ found:
if (!xfs_buf_trylock(bp)) {
if (flags & XBF_TRYLOCK) {
xfs_buf_rele(bp);
XFS_STATS_INC(xb_busy_locked);
XFS_STATS_INC(btp->bt_mount, xb_busy_locked);
return NULL;
}
xfs_buf_lock(bp);
XFS_STATS_INC(xb_get_locked_waited);
XFS_STATS_INC(btp->bt_mount, xb_get_locked_waited);
}
/*
@ -549,7 +550,7 @@ found:
}
trace_xfs_buf_find(bp, flags, _RET_IP_);
XFS_STATS_INC(xb_get_locked);
XFS_STATS_INC(btp->bt_mount, xb_get_locked);
return bp;
}
@ -603,7 +604,7 @@ found:
}
}
XFS_STATS_INC(xb_get);
XFS_STATS_INC(target->bt_mount, xb_get);
trace_xfs_buf_get(bp, flags, _RET_IP_);
return bp;
}
@ -643,7 +644,7 @@ xfs_buf_read_map(
trace_xfs_buf_read(bp, flags, _RET_IP_);
if (!XFS_BUF_ISDONE(bp)) {
XFS_STATS_INC(xb_get_read);
XFS_STATS_INC(target->bt_mount, xb_get_read);
bp->b_ops = ops;
_xfs_buf_read(bp, flags);
} else if (flags & XBF_ASYNC) {

2
fs/xfs/xfs_dir2_readdir.c
View File

@ -666,7 +666,7 @@ xfs_readdir(
return -EIO;
ASSERT(S_ISDIR(dp->i_d.di_mode));
XFS_STATS_INC(xs_dir_getdents);
XFS_STATS_INC(dp->i_mount, xs_dir_getdents);
args.dp = dp;
args.geo = dp->i_mount->m_dir_geo;

14
fs/xfs/xfs_dquot.c
View File

@ -75,9 +75,9 @@ xfs_qm_dqdestroy(
ASSERT(list_empty(&dqp->q_lru));
mutex_destroy(&dqp->q_qlock);
kmem_zone_free(xfs_qm_dqzone, dqp);
XFS_STATS_DEC(xs_qm_dquot);
XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot);
kmem_zone_free(xfs_qm_dqzone, dqp);
}
/*
@ -605,7 +605,7 @@ xfs_qm_dqread(
break;
}
XFS_STATS_INC(xs_qm_dquot);
XFS_STATS_INC(mp, xs_qm_dquot);
trace_xfs_dqread(dqp);
@ -747,12 +747,12 @@ restart:
mutex_unlock(&qi->qi_tree_lock);
trace_xfs_dqget_hit(dqp);
XFS_STATS_INC(xs_qm_dqcachehits);
XFS_STATS_INC(mp, xs_qm_dqcachehits);
*O_dqpp = dqp;
return 0;
}
mutex_unlock(&qi->qi_tree_lock);
XFS_STATS_INC(xs_qm_dqcachemisses);
XFS_STATS_INC(mp, xs_qm_dqcachemisses);
/*
* Dquot cache miss. We don't want to keep the inode lock across
@ -806,7 +806,7 @@ restart:
mutex_unlock(&qi->qi_tree_lock);
trace_xfs_dqget_dup(dqp);
xfs_qm_dqdestroy(dqp);
XFS_STATS_INC(xs_qm_dquot_dups);
XFS_STATS_INC(mp, xs_qm_dquot_dups);
goto restart;
}
@ -846,7 +846,7 @@ xfs_qm_dqput(
trace_xfs_dqput_free(dqp);
if (list_lru_add(&qi->qi_lru, &dqp->q_lru))
XFS_STATS_INC(xs_qm_dquot_unused);
XFS_STATS_INC(dqp->q_mount, xs_qm_dquot_unused);
}
xfs_dqunlock(dqp);
}

114
fs/xfs/xfs_file.c
View File

@ -242,19 +242,30 @@ xfs_file_fsync(
}
/*
* All metadata updates are logged, which means that we just have
* to flush the log up to the latest LSN that touched the inode.
* All metadata updates are logged, which means that we just have to
* flush the log up to the latest LSN that touched the inode. If we have
* concurrent fsync/fdatasync() calls, we need them to all block on the
* log force before we clear the ili_fsync_fields field. This ensures
* that we don't get a racing sync operation that does not wait for the
* metadata to hit the journal before returning. If we race with
* clearing the ili_fsync_fields, then all that will happen is the log
* force will do nothing as the lsn will already be on disk. We can't
* race with setting ili_fsync_fields because that is done under
* XFS_ILOCK_EXCL, and that can't happen because we hold the lock shared
* until after the ili_fsync_fields is cleared.
*/
xfs_ilock(ip, XFS_ILOCK_SHARED);
if (xfs_ipincount(ip)) {
if (!datasync ||
(ip->i_itemp->ili_fields & ~XFS_ILOG_TIMESTAMP))
(ip->i_itemp->ili_fsync_fields & ~XFS_ILOG_TIMESTAMP))
lsn = ip->i_itemp->ili_last_lsn;
}
xfs_iunlock(ip, XFS_ILOCK_SHARED);
if (lsn)
if (lsn) {
error = _xfs_log_force_lsn(mp, lsn, XFS_LOG_SYNC, &log_flushed);
ip->i_itemp->ili_fsync_fields = 0;
}
xfs_iunlock(ip, XFS_ILOCK_SHARED);
/*
* If we only have a single device, and the log force about was
@ -287,7 +298,7 @@ xfs_file_read_iter(
xfs_fsize_t n;
loff_t pos = iocb->ki_pos;
XFS_STATS_INC(xs_read_calls);
XFS_STATS_INC(mp, xs_read_calls);
if (unlikely(iocb->ki_flags & IOCB_DIRECT))
ioflags |= XFS_IO_ISDIRECT;
@ -365,7 +376,7 @@ xfs_file_read_iter(
ret = generic_file_read_iter(iocb, to);
if (ret > 0)
XFS_STATS_ADD(xs_read_bytes, ret);
XFS_STATS_ADD(mp, xs_read_bytes, ret);
xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED);
return ret;
@ -383,7 +394,7 @@ xfs_file_splice_read(
int ioflags = 0;
ssize_t ret;
XFS_STATS_INC(xs_read_calls);
XFS_STATS_INC(ip->i_mount, xs_read_calls);
if (infilp->f_mode & FMODE_NOCMTIME)
ioflags |= XFS_IO_INVIS;
@ -401,7 +412,7 @@ xfs_file_splice_read(
else
ret = generic_file_splice_read(infilp, ppos, pipe, count, flags);
if (ret > 0)
XFS_STATS_ADD(xs_read_bytes, ret);
XFS_STATS_ADD(ip->i_mount, xs_read_bytes, ret);
xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED);
return ret;
@ -482,6 +493,8 @@ xfs_zero_eof(
ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL));
ASSERT(offset > isize);
trace_xfs_zero_eof(ip, isize, offset - isize);
/*
* First handle zeroing the block on which isize resides.
*
@ -574,6 +587,7 @@ xfs_file_aio_write_checks(
struct xfs_inode *ip = XFS_I(inode);
ssize_t error = 0;
size_t count = iov_iter_count(from);
bool drained_dio = false;
restart:
error = generic_write_checks(iocb, from);
@ -611,12 +625,13 @@ restart:
bool zero = false;
spin_unlock(&ip->i_flags_lock);
if (*iolock == XFS_IOLOCK_SHARED) {
xfs_rw_iunlock(ip, *iolock);
*iolock = XFS_IOLOCK_EXCL;
xfs_rw_ilock(ip, *iolock);
iov_iter_reexpand(from, count);
if (!drained_dio) {
if (*iolock == XFS_IOLOCK_SHARED) {
xfs_rw_iunlock(ip, *iolock);
*iolock = XFS_IOLOCK_EXCL;
xfs_rw_ilock(ip, *iolock);
iov_iter_reexpand(from, count);
}
/*
* We now have an IO submission barrier in place, but
* AIO can do EOF updates during IO completion and hence
@ -626,6 +641,7 @@ restart:
* no-op.
*/
inode_dio_wait(inode);
drained_dio = true;
goto restart;
}
error = xfs_zero_eof(ip, iocb->ki_pos, i_size_read(inode), &zero);
@ -867,7 +883,7 @@ xfs_file_write_iter(
ssize_t ret;
size_t ocount = iov_iter_count(from);
XFS_STATS_INC(xs_write_calls);
XFS_STATS_INC(ip->i_mount, xs_write_calls);
if (ocount == 0)
return 0;
@ -883,7 +899,7 @@ xfs_file_write_iter(
if (ret > 0) {
ssize_t err;
XFS_STATS_ADD(xs_write_bytes, ret);
XFS_STATS_ADD(ip->i_mount, xs_write_bytes, ret);
/* Handle various SYNC-type writes */
err = generic_write_sync(file, iocb->ki_pos - ret, ret);
@ -1477,7 +1493,7 @@ xfs_file_llseek(
*
* mmap_sem (MM)
* sb_start_pagefault(vfs, freeze)
* i_mmap_lock (XFS - truncate serialisation)
* i_mmaplock (XFS - truncate serialisation)
* page_lock (MM)
* i_lock (XFS - extent map serialisation)
*/
@ -1503,8 +1519,7 @@ xfs_filemap_page_mkwrite(
xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
if (IS_DAX(inode)) {
ret = __dax_mkwrite(vma, vmf, xfs_get_blocks_direct,
xfs_end_io_dax_write);
ret = __dax_mkwrite(vma, vmf, xfs_get_blocks_dax_fault, NULL);
} else {
ret = block_page_mkwrite(vma, vmf, xfs_get_blocks);
ret = block_page_mkwrite_return(ret);
@ -1538,7 +1553,7 @@ xfs_filemap_fault(
* changes to xfs_get_blocks_direct() to map unwritten extent
* ioend for conversion on read-only mappings.
*/
ret = __dax_fault(vma, vmf, xfs_get_blocks_direct, NULL);
ret = __dax_fault(vma, vmf, xfs_get_blocks_dax_fault, NULL);
} else
ret = filemap_fault(vma, vmf);
xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
@ -1546,6 +1561,13 @@ xfs_filemap_fault(
return ret;
}
/*
* Similar to xfs_filemap_fault(), the DAX fault path can call into here on
* both read and write faults. Hence we need to handle both cases. There is no
* ->pmd_mkwrite callout for huge pages, so we have a single function here to
* handle both cases here. @flags carries the information on the type of fault
* occuring.
*/
STATIC int
xfs_filemap_pmd_fault(
struct vm_area_struct *vma,
@ -1562,22 +1584,62 @@ xfs_filemap_pmd_fault(
trace_xfs_filemap_pmd_fault(ip);
sb_start_pagefault(inode->i_sb);
file_update_time(vma->vm_file);
if (flags & FAULT_FLAG_WRITE) {
sb_start_pagefault(inode->i_sb);
file_update_time(vma->vm_file);
}
xfs_ilock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
ret = __dax_pmd_fault(vma, addr, pmd, flags, xfs_get_blocks_direct,
xfs_end_io_dax_write);
ret = __dax_pmd_fault(vma, addr, pmd, flags, xfs_get_blocks_dax_fault,
NULL);
xfs_iunlock(XFS_I(inode), XFS_MMAPLOCK_SHARED);
sb_end_pagefault(inode->i_sb);
if (flags & FAULT_FLAG_WRITE)
sb_end_pagefault(inode->i_sb);
return ret;
}
/*
* pfn_mkwrite was originally inteneded to ensure we capture time stamp
* updates on write faults. In reality, it's need to serialise against
* truncate similar to page_mkwrite. Hence we open-code dax_pfn_mkwrite()
* here and cycle the XFS_MMAPLOCK_SHARED to ensure we serialise the fault
* barrier in place.
*/
static int
xfs_filemap_pfn_mkwrite(
struct vm_area_struct *vma,
struct vm_fault *vmf)
{
struct inode *inode = file_inode(vma->vm_file);
struct xfs_inode *ip = XFS_I(inode);
int ret = VM_FAULT_NOPAGE;
loff_t size;
trace_xfs_filemap_pfn_mkwrite(ip);
sb_start_pagefault(inode->i_sb);
file_update_time(vma->vm_file);
/* check if the faulting page hasn't raced with truncate */
xfs_ilock(ip, XFS_MMAPLOCK_SHARED);
size = (i_size_read(inode) + PAGE_SIZE - 1) >> PAGE_SHIFT;
if (vmf->pgoff >= size)
ret = VM_FAULT_SIGBUS;
xfs_iunlock(ip, XFS_MMAPLOCK_SHARED);
sb_end_pagefault(inode->i_sb);
return ret;
}
static const struct vm_operations_struct xfs_file_vm_ops = {
.fault = xfs_filemap_fault,
.pmd_fault = xfs_filemap_pmd_fault,
.map_pages = filemap_map_pages,
.page_mkwrite = xfs_filemap_page_mkwrite,
.pfn_mkwrite = xfs_filemap_pfn_mkwrite,
};
STATIC int

18
fs/xfs/xfs_icache.c
View File

@ -63,7 +63,7 @@ xfs_inode_alloc(
return NULL;
}
XFS_STATS_INC(vn_active);
XFS_STATS_INC(mp, vn_active);
ASSERT(atomic_read(&ip->i_pincount) == 0);
ASSERT(!spin_is_locked(&ip->i_flags_lock));
ASSERT(!xfs_isiflocked(ip));
@ -129,7 +129,7 @@ xfs_inode_free(
/* asserts to verify all state is correct here */
ASSERT(atomic_read(&ip->i_pincount) == 0);
ASSERT(!xfs_isiflocked(ip));
XFS_STATS_DEC(vn_active);
XFS_STATS_DEC(ip->i_mount, vn_active);
call_rcu(&VFS_I(ip)->i_rcu, xfs_inode_free_callback);
}
@ -159,7 +159,7 @@ xfs_iget_cache_hit(
spin_lock(&ip->i_flags_lock);
if (ip->i_ino != ino) {
trace_xfs_iget_skip(ip);
XFS_STATS_INC(xs_ig_frecycle);
XFS_STATS_INC(mp, xs_ig_frecycle);
error = -EAGAIN;
goto out_error;
}
@ -177,7 +177,7 @@ xfs_iget_cache_hit(
*/
if (ip->i_flags & (XFS_INEW|XFS_IRECLAIM)) {
trace_xfs_iget_skip(ip);
XFS_STATS_INC(xs_ig_frecycle);
XFS_STATS_INC(mp, xs_ig_frecycle);
error = -EAGAIN;
goto out_error;
}
@ -259,7 +259,7 @@ xfs_iget_cache_hit(
xfs_ilock(ip, lock_flags);
xfs_iflags_clear(ip, XFS_ISTALE | XFS_IDONTCACHE);
XFS_STATS_INC(xs_ig_found);
XFS_STATS_INC(mp, xs_ig_found);
return 0;
@ -342,7 +342,7 @@ xfs_iget_cache_miss(
error = radix_tree_insert(&pag->pag_ici_root, agino, ip);
if (unlikely(error)) {
WARN_ON(error != -EEXIST);
XFS_STATS_INC(xs_ig_dup);
XFS_STATS_INC(mp, xs_ig_dup);
error = -EAGAIN;
goto out_preload_end;
}
@ -412,7 +412,7 @@ xfs_iget(
if (!ino || XFS_INO_TO_AGNO(mp, ino) >= mp->m_sb.sb_agcount)
return -EINVAL;
XFS_STATS_INC(xs_ig_attempts);
XFS_STATS_INC(mp, xs_ig_attempts);
/* get the perag structure and ensure that it's inode capable */
pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ino));
@ -429,7 +429,7 @@ again:
goto out_error_or_again;
} else {
rcu_read_unlock();
XFS_STATS_INC(xs_ig_missed);
XFS_STATS_INC(mp, xs_ig_missed);
error = xfs_iget_cache_miss(mp, pag, tp, ino, &ip,
flags, lock_flags);
@ -965,7 +965,7 @@ reclaim:
xfs_ifunlock(ip);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
XFS_STATS_INC(xs_ig_reclaims);
XFS_STATS_INC(ip->i_mount, xs_ig_reclaims);
/*
* Remove the inode from the per-AG radix tree.
*

8
fs/xfs/xfs_inode.c
View File

@ -2365,6 +2365,7 @@ retry:
iip->ili_last_fields = iip->ili_fields;
iip->ili_fields = 0;
iip->ili_fsync_fields = 0;
iip->ili_logged = 1;
xfs_trans_ail_copy_lsn(mp->m_ail, &iip->ili_flush_lsn,
&iip->ili_item.li_lsn);
@ -3271,8 +3272,8 @@ xfs_iflush_cluster(
}
if (clcount) {
XFS_STATS_INC(xs_icluster_flushcnt);
XFS_STATS_ADD(xs_icluster_flushinode, clcount);
XFS_STATS_INC(mp, xs_icluster_flushcnt);
XFS_STATS_ADD(mp, xs_icluster_flushinode, clcount);
}
out_free:
@ -3345,7 +3346,7 @@ xfs_iflush(
struct xfs_dinode *dip;
int error;
XFS_STATS_INC(xs_iflush_count);
XFS_STATS_INC(mp, xs_iflush_count);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL|XFS_ILOCK_SHARED));
ASSERT(xfs_isiflocked(ip));
@ -3560,6 +3561,7 @@ xfs_iflush_int(
*/
iip->ili_last_fields = iip->ili_fields;
iip->ili_fields = 0;
iip->ili_fsync_fields = 0;
iip->ili_logged = 1;
xfs_trans_ail_copy_lsn(mp->m_ail, &iip->ili_flush_lsn,

1
fs/xfs/xfs_inode_item.c
View File

@ -719,6 +719,7 @@ xfs_iflush_abort(
* attempted.
*/
iip->ili_fields = 0;
iip->ili_fsync_fields = 0;
}
/*
* Release the inode's flush lock since we're done with it.

1
fs/xfs/xfs_inode_item.h
View File

@ -34,6 +34,7 @@ typedef struct xfs_inode_log_item {
unsigned short ili_logged; /* flushed logged data */
unsigned int ili_last_fields; /* fields when flushed */
unsigned int ili_fields; /* fields to be logged */
unsigned int ili_fsync_fields; /* logged since last fsync */
} xfs_inode_log_item_t;
static inline int xfs_inode_clean(xfs_inode_t *ip)

23
fs/xfs/xfs_ioctl.c
View File

@ -40,6 +40,7 @@
#include "xfs_symlink.h"
#include "xfs_trans.h"
#include "xfs_pnfs.h"
#include "xfs_acl.h"
#include <linux/capability.h>
#include <linux/dcache.h>
@ -411,7 +412,7 @@ xfs_attrlist_by_handle(
if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
return -EFAULT;
if (al_hreq.buflen < sizeof(struct attrlist) ||
al_hreq.buflen > XATTR_LIST_MAX)
al_hreq.buflen > XFS_XATTR_LIST_MAX)
return -EINVAL;
/*
@ -455,7 +456,7 @@ xfs_attrmulti_attr_get(
unsigned char *kbuf;
int error = -EFAULT;
if (*len > XATTR_SIZE_MAX)
if (*len > XFS_XATTR_SIZE_MAX)
return -EINVAL;
kbuf = kmem_zalloc_large(*len, KM_SLEEP);
if (!kbuf)
@ -482,17 +483,22 @@ xfs_attrmulti_attr_set(
__uint32_t flags)
{
unsigned char *kbuf;
int error;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return -EPERM;
if (len > XATTR_SIZE_MAX)
if (len > XFS_XATTR_SIZE_MAX)
return -EINVAL;
kbuf = memdup_user(ubuf, len);
if (IS_ERR(kbuf))
return PTR_ERR(kbuf);
return xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
if (!error)
xfs_forget_acl(inode, name, flags);
kfree(kbuf);
return error;
}
int
@ -501,9 +507,14 @@ xfs_attrmulti_attr_remove(
unsigned char *name,
__uint32_t flags)
{
int error;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return -EPERM;
return xfs_attr_remove(XFS_I(inode), name, flags);
error = xfs_attr_remove(XFS_I(inode), name, flags);
if (!error)
xfs_forget_acl(inode, name, flags);
return error;
}
STATIC int
@ -1028,7 +1039,7 @@ xfs_ioctl_setattr_xflags(
xfs_diflags_to_linux(ip);
xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_CHG);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
XFS_STATS_INC(xs_ig_attrchg);
XFS_STATS_INC(mp, xs_ig_attrchg);
return 0;
}

2
fs/xfs/xfs_ioctl32.c
View File

@ -356,7 +356,7 @@ xfs_compat_attrlist_by_handle(
sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
return -EFAULT;
if (al_hreq.buflen < sizeof(struct attrlist) ||
al_hreq.buflen > XATTR_LIST_MAX)
al_hreq.buflen > XFS_XATTR_LIST_MAX)
return -EINVAL;
/*

70
fs/xfs/xfs_iomap.c
View File

@ -131,20 +131,30 @@ xfs_iomap_write_direct(
uint qblocks, resblks, resrtextents;
int committed;
int error;
error = xfs_qm_dqattach(ip, 0);
if (error)
return error;
int lockmode;
int bmapi_flags = XFS_BMAPI_PREALLOC;
rt = XFS_IS_REALTIME_INODE(ip);
extsz = xfs_get_extsz_hint(ip);
lockmode = XFS_ILOCK_SHARED; /* locked by caller */
ASSERT(xfs_isilocked(ip, lockmode));
offset_fsb = XFS_B_TO_FSBT(mp, offset);
last_fsb = XFS_B_TO_FSB(mp, ((xfs_ufsize_t)(offset + count)));
if ((offset + count) > XFS_ISIZE(ip)) {
/*
* Assert that the in-core extent list is present since this can
* call xfs_iread_extents() and we only have the ilock shared.
* This should be safe because the lock was held around a bmapi
* call in the caller and we only need it to access the in-core
* list.
*/
ASSERT(XFS_IFORK_PTR(ip, XFS_DATA_FORK)->if_flags &
XFS_IFEXTENTS);
error = xfs_iomap_eof_align_last_fsb(mp, ip, extsz, &last_fsb);
if (error)
return error;
goto out_unlock;
} else {
if (nmaps && (imap->br_startblock == HOLESTARTBLOCK))
last_fsb = MIN(last_fsb, (xfs_fileoff_t)
@ -173,10 +183,36 @@ xfs_iomap_write_direct(
quota_flag = XFS_QMOPT_RES_REGBLKS;
}
/*
* Drop the shared lock acquired by the caller, attach the dquot if
* necessary and move on to transaction setup.
*/
xfs_iunlock(ip, lockmode);
error = xfs_qm_dqattach(ip, 0);
if (error)
return error;
/*
* Allocate and setup the transaction
*/
tp = xfs_trans_alloc(mp, XFS_TRANS_DIOSTRAT);
/*
* For DAX, we do not allocate unwritten extents, but instead we zero
* the block before we commit the transaction. Ideally we'd like to do
* this outside the transaction context, but if we commit and then crash
* we may not have zeroed the blocks and this will be exposed on
* recovery of the allocation. Hence we must zero before commit.
* Further, if we are mapping unwritten extents here, we need to zero
* and convert them to written so that we don't need an unwritten extent
* callback for DAX. This also means that we need to be able to dip into
* the reserve block pool if there is no space left but we need to do
* unwritten extent conversion.
*/
if (IS_DAX(VFS_I(ip))) {
bmapi_flags = XFS_BMAPI_CONVERT | XFS_BMAPI_ZERO;
tp->t_flags |= XFS_TRANS_RESERVE;
}
error = xfs_trans_reserve(tp, &M_RES(mp)->tr_write,
resblks, resrtextents);
/*
@ -187,7 +223,8 @@ xfs_iomap_write_direct(
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
lockmode = XFS_ILOCK_EXCL;
xfs_ilock(ip, lockmode);
error = xfs_trans_reserve_quota_nblks(tp, ip, qblocks, 0, quota_flag);
if (error)
@ -202,8 +239,8 @@ xfs_iomap_write_direct(
xfs_bmap_init(&free_list, &firstfsb);
nimaps = 1;
error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb,
XFS_BMAPI_PREALLOC, &firstfsb, 0,
imap, &nimaps, &free_list);
bmapi_flags, &firstfsb, resblks, imap,
&nimaps, &free_list);
if (error)
goto out_bmap_cancel;
@ -213,6 +250,7 @@ xfs_iomap_write_direct(
error = xfs_bmap_finish(&tp, &free_list, &committed);
if (error)
goto out_bmap_cancel;
error = xfs_trans_commit(tp);
if (error)
goto out_unlock;
@ -229,7 +267,7 @@ xfs_iomap_write_direct(
error = xfs_alert_fsblock_zero(ip, imap);
out_unlock:
xfs_iunlock(ip, XFS_ILOCK_EXCL);
xfs_iunlock(ip, lockmode);
return error;
out_bmap_cancel:
@ -670,7 +708,7 @@ xfs_iomap_write_allocate(
count_fsb = imap->br_blockcount;
map_start_fsb = imap->br_startoff;
XFS_STATS_ADD(xs_xstrat_bytes, XFS_FSB_TO_B(mp, count_fsb));
XFS_STATS_ADD(mp, xs_xstrat_bytes, XFS_FSB_TO_B(mp, count_fsb));
while (count_fsb != 0) {
/*
@ -750,9 +788,9 @@ xfs_iomap_write_allocate(
* pointer that the caller gave to us.
*/
error = xfs_bmapi_write(tp, ip, map_start_fsb,
count_fsb, 0,
&first_block, 1,
imap, &nimaps, &free_list);
count_fsb, 0, &first_block,
nres, imap, &nimaps,
&free_list);
if (error)
goto trans_cancel;
@ -777,7 +815,7 @@ xfs_iomap_write_allocate(
if ((offset_fsb >= imap->br_startoff) &&
(offset_fsb < (imap->br_startoff +
imap->br_blockcount))) {
XFS_STATS_INC(xs_xstrat_quick);
XFS_STATS_INC(mp, xs_xstrat_quick);
return 0;
}
@ -866,8 +904,8 @@ xfs_iomap_write_unwritten(
xfs_bmap_init(&free_list, &firstfsb);
nimaps = 1;
error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb,
XFS_BMAPI_CONVERT, &firstfsb,
1, &imap, &nimaps, &free_list);
XFS_BMAPI_CONVERT, &firstfsb, resblks,
&imap, &nimaps, &free_list);
if (error)
goto error_on_bmapi_transaction;

4
fs/xfs/xfs_iops.c
View File

@ -695,7 +695,7 @@ xfs_setattr_nonsize(
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
XFS_STATS_INC(xs_ig_attrchg);
XFS_STATS_INC(mp, xs_ig_attrchg);
if (mp->m_flags & XFS_MOUNT_WSYNC)
xfs_trans_set_sync(tp);
@ -922,7 +922,7 @@ xfs_setattr_size(
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
XFS_STATS_INC(xs_ig_attrchg);
XFS_STATS_INC(mp, xs_ig_attrchg);
if (mp->m_flags & XFS_MOUNT_WSYNC)
xfs_trans_set_sync(tp);

7
fs/xfs/xfs_linux.h
View File

@ -171,6 +171,13 @@ struct xfs_kobj {
struct completion complete;
};
struct xstats {
struct xfsstats __percpu *xs_stats;
struct xfs_kobj xs_kobj;
};
extern struct xstats xfsstats;
/* Kernel uid/gid conversion. These are used to convert to/from the on disk
* uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally.
* The conversion here is type only, the value will remain the same since we

93
fs/xfs/xfs_log.c
View File

@ -268,7 +268,7 @@ xlog_grant_head_wait(
__set_current_state(TASK_UNINTERRUPTIBLE);
spin_unlock(&head->lock);
XFS_STATS_INC(xs_sleep_logspace);
XFS_STATS_INC(log->l_mp, xs_sleep_logspace);
trace_xfs_log_grant_sleep(log, tic);
schedule();
@ -379,7 +379,7 @@ xfs_log_regrant(
if (XLOG_FORCED_SHUTDOWN(log))
return -EIO;
XFS_STATS_INC(xs_try_logspace);
XFS_STATS_INC(mp, xs_try_logspace);
/*
* This is a new transaction on the ticket, so we need to change the
@ -448,7 +448,7 @@ xfs_log_reserve(
if (XLOG_FORCED_SHUTDOWN(log))
return -EIO;
XFS_STATS_INC(xs_try_logspace);
XFS_STATS_INC(mp, xs_try_logspace);
ASSERT(*ticp == NULL);
tic = xlog_ticket_alloc(log, unit_bytes, cnt, client, permanent,
@ -1768,7 +1768,7 @@ xlog_sync(
int v2 = xfs_sb_version_haslogv2(&log->l_mp->m_sb);
int size;
XFS_STATS_INC(xs_log_writes);
XFS_STATS_INC(log->l_mp, xs_log_writes);
ASSERT(atomic_read(&iclog->ic_refcnt) == 0);
/* Add for LR header */
@ -1805,7 +1805,7 @@ xlog_sync(
bp = iclog->ic_bp;
XFS_BUF_SET_ADDR(bp, BLOCK_LSN(be64_to_cpu(iclog->ic_header.h_lsn)));
XFS_STATS_ADD(xs_log_blocks, BTOBB(count));
XFS_STATS_ADD(log->l_mp, xs_log_blocks, BTOBB(count));
/* Do we need to split this write into 2 parts? */
if (XFS_BUF_ADDR(bp) + BTOBB(count) > log->l_logBBsize) {
@ -2422,11 +2422,20 @@ xlog_write(
&partial_copy_len);
xlog_verify_dest_ptr(log, ptr);
/* copy region */
/*
* Copy region.
*
* Unmount records just log an opheader, so can have
* empty payloads with no data region to copy. Hence we
* only copy the payload if the vector says it has data
* to copy.
*/
ASSERT(copy_len >= 0);
memcpy(ptr, reg->i_addr + copy_off, copy_len);
xlog_write_adv_cnt(&ptr, &len, &log_offset, copy_len);
if (copy_len > 0) {
memcpy(ptr, reg->i_addr + copy_off, copy_len);
xlog_write_adv_cnt(&ptr, &len, &log_offset,
copy_len);
}
copy_len += start_rec_copy + sizeof(xlog_op_header_t);
record_cnt++;
data_cnt += contwr ? copy_len : 0;
@ -2913,7 +2922,7 @@ restart:
iclog = log->l_iclog;
if (iclog->ic_state != XLOG_STATE_ACTIVE) {
XFS_STATS_INC(xs_log_noiclogs);
XFS_STATS_INC(log->l_mp, xs_log_noiclogs);
/* Wait for log writes to have flushed */
xlog_wait(&log->l_flush_wait, &log->l_icloglock);
@ -3165,11 +3174,19 @@ xlog_state_switch_iclogs(
}
if (log->l_curr_block >= log->l_logBBsize) {
/*
* Rewind the current block before the cycle is bumped to make
* sure that the combined LSN never transiently moves forward
* when the log wraps to the next cycle. This is to support the
* unlocked sample of these fields from xlog_valid_lsn(). Most
* other cases should acquire l_icloglock.
*/
log->l_curr_block -= log->l_logBBsize;
ASSERT(log->l_curr_block >= 0);
smp_wmb();
log->l_curr_cycle++;
if (log->l_curr_cycle == XLOG_HEADER_MAGIC_NUM)
log->l_curr_cycle++;
log->l_curr_block -= log->l_logBBsize;
ASSERT(log->l_curr_block >= 0);
}
ASSERT(iclog == log->l_iclog);
log->l_iclog = iclog->ic_next;
@ -3212,7 +3229,7 @@ _xfs_log_force(
struct xlog_in_core *iclog;
xfs_lsn_t lsn;
XFS_STATS_INC(xs_log_force);
XFS_STATS_INC(mp, xs_log_force);
xlog_cil_force(log);
@ -3297,7 +3314,7 @@ maybe_sleep:
spin_unlock(&log->l_icloglock);
return -EIO;
}
XFS_STATS_INC(xs_log_force_sleep);
XFS_STATS_INC(mp, xs_log_force_sleep);
xlog_wait(&iclog->ic_force_wait, &log->l_icloglock);
/*
* No need to grab the log lock here since we're
@ -3362,7 +3379,7 @@ _xfs_log_force_lsn(
ASSERT(lsn != 0);
XFS_STATS_INC(xs_log_force);
XFS_STATS_INC(mp, xs_log_force);
lsn = xlog_cil_force_lsn(log, lsn);
if (lsn == NULLCOMMITLSN)
@ -3411,7 +3428,7 @@ try_again:
(XLOG_STATE_WANT_SYNC | XLOG_STATE_SYNCING))) {
ASSERT(!(iclog->ic_state & XLOG_STATE_IOERROR));
XFS_STATS_INC(xs_log_force_sleep);
XFS_STATS_INC(mp, xs_log_force_sleep);
xlog_wait(&iclog->ic_prev->ic_write_wait,
&log->l_icloglock);
@ -3441,7 +3458,7 @@ try_again:
spin_unlock(&log->l_icloglock);
return -EIO;
}
XFS_STATS_INC(xs_log_force_sleep);
XFS_STATS_INC(mp, xs_log_force_sleep);
xlog_wait(&iclog->ic_force_wait, &log->l_icloglock);
/*
* No need to grab the log lock here since we're
@ -4023,3 +4040,45 @@ xlog_iclogs_empty(
return 1;
}
/*
* Verify that an LSN stamped into a piece of metadata is valid. This is
* intended for use in read verifiers on v5 superblocks.
*/
bool
xfs_log_check_lsn(
struct xfs_mount *mp,
xfs_lsn_t lsn)
{
struct xlog *log = mp->m_log;
bool valid;
/*
* norecovery mode skips mount-time log processing and unconditionally
* resets the in-core LSN. We can't validate in this mode, but
* modifications are not allowed anyways so just return true.
*/
if (mp->m_flags & XFS_MOUNT_NORECOVERY)
return true;
/*
* Some metadata LSNs are initialized to NULL (e.g., the agfl). This is
* handled by recovery and thus safe to ignore here.
*/
if (lsn == NULLCOMMITLSN)
return true;
valid = xlog_valid_lsn(mp->m_log, lsn);
/* warn the user about what's gone wrong before verifier failure */
if (!valid) {
spin_lock(&log->l_icloglock);
xfs_warn(mp,
"Corruption warning: Metadata has LSN (%d:%d) ahead of current LSN (%d:%d). "
"Please unmount and run xfs_repair (>= v4.3) to resolve.",
CYCLE_LSN(lsn), BLOCK_LSN(lsn),
log->l_curr_cycle, log->l_curr_block);
spin_unlock(&log->l_icloglock);
}
return valid;
}

1
fs/xfs/xfs_log.h
View File

@ -181,5 +181,6 @@ bool xfs_log_item_in_current_chkpt(struct xfs_log_item *lip);
void xfs_log_work_queue(struct xfs_mount *mp);
void xfs_log_worker(struct work_struct *work);
void xfs_log_quiesce(struct xfs_mount *mp);
bool xfs_log_check_lsn(struct xfs_mount *, xfs_lsn_t);
#endif /* __XFS_LOG_H__ */

51
fs/xfs/xfs_log_priv.h
View File

@ -560,4 +560,55 @@ static inline void xlog_wait(wait_queue_head_t *wq, spinlock_t *lock)
remove_wait_queue(wq, &wait);
}
/*
* The LSN is valid so long as it is behind the current LSN. If it isn't, this
* means that the next log record that includes this metadata could have a
* smaller LSN. In turn, this means that the modification in the log would not
* replay.
*/
static inline bool
xlog_valid_lsn(
struct xlog *log,
xfs_lsn_t lsn)
{
int cur_cycle;
int cur_block;
bool valid = true;
/*
* First, sample the current lsn without locking to avoid added
* contention from metadata I/O. The current cycle and block are updated
* (in xlog_state_switch_iclogs()) and read here in a particular order
* to avoid false negatives (e.g., thinking the metadata LSN is valid
* when it is not).
*
* The current block is always rewound before the cycle is bumped in
* xlog_state_switch_iclogs() to ensure the current LSN is never seen in
* a transiently forward state. Instead, we can see the LSN in a
* transiently behind state if we happen to race with a cycle wrap.
*/
cur_cycle = ACCESS_ONCE(log->l_curr_cycle);
smp_rmb();
cur_block = ACCESS_ONCE(log->l_curr_block);
if ((CYCLE_LSN(lsn) > cur_cycle) ||
(CYCLE_LSN(lsn) == cur_cycle && BLOCK_LSN(lsn) > cur_block)) {
/*
* If the metadata LSN appears invalid, it's possible the check
* above raced with a wrap to the next log cycle. Grab the lock
* to check for sure.
*/
spin_lock(&log->l_icloglock);
cur_cycle = log->l_curr_cycle;
cur_block = log->l_curr_block;
spin_unlock(&log->l_icloglock);
if ((CYCLE_LSN(lsn) > cur_cycle) ||
(CYCLE_LSN(lsn) == cur_cycle && BLOCK_LSN(lsn) > cur_block))
valid = false;
}
return valid;
}
#endif /* __XFS_LOG_PRIV_H__ */

14
fs/xfs/xfs_log_recover.c
View File

@ -3431,7 +3431,7 @@ xlog_recover_add_to_cont_trans(
* previous record. Copy the rest of the header.
*/
if (list_empty(&trans->r_itemq)) {
ASSERT(len < sizeof(struct xfs_trans_header));
ASSERT(len <= sizeof(struct xfs_trans_header));
if (len > sizeof(struct xfs_trans_header)) {
xfs_warn(log->l_mp, "%s: bad header length", __func__);
return -EIO;
@ -4609,9 +4609,19 @@ xlog_recover(
int error;
/* find the tail of the log */
if ((error = xlog_find_tail(log, &head_blk, &tail_blk)))
error = xlog_find_tail(log, &head_blk, &tail_blk);
if (error)
return error;
/*
* The superblock was read before the log was available and thus the LSN
* could not be verified. Check the superblock LSN against the current
* LSN now that it's known.
*/
if (xfs_sb_version_hascrc(&log->l_mp->m_sb) &&
!xfs_log_check_lsn(log->l_mp, log->l_mp->m_sb.sb_lsn))
return -EINVAL;
if (tail_blk != head_blk) {
/* There used to be a comment here:
*

7
fs/xfs/xfs_message.c
View File

@ -17,6 +17,7 @@
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_error.h"
#include "xfs_format.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
@ -43,6 +44,7 @@ void func(const struct xfs_mount *mp, const char *fmt, ...) \
{ \
struct va_format vaf; \
va_list args; \
int level; \
\
va_start(args, fmt); \
\
@ -51,6 +53,11 @@ void func(const struct xfs_mount *mp, const char *fmt, ...) \
\
__xfs_printk(kern_level, mp, &vaf); \
va_end(args); \
\
if (!kstrtoint(kern_level, 0, &level) && \
level <= LOGLEVEL_ERR && \
xfs_error_level >= XFS_ERRLEVEL_HIGH) \
xfs_stack_trace(); \
} \
define_xfs_printk_level(xfs_emerg, KERN_EMERG);

21
fs/xfs/xfs_mount.c
View File

@ -47,6 +47,16 @@ static DEFINE_MUTEX(xfs_uuid_table_mutex);
static int xfs_uuid_table_size;
static uuid_t *xfs_uuid_table;
void
xfs_uuid_table_free(void)
{
if (xfs_uuid_table_size == 0)
return;
kmem_free(xfs_uuid_table);
xfs_uuid_table = NULL;
xfs_uuid_table_size = 0;
}
/*
* See if the UUID is unique among mounted XFS filesystems.
* Mount fails if UUID is nil or a FS with the same UUID is already mounted.
@ -693,10 +703,15 @@ xfs_mountfs(
if (error)
goto out;
error = xfs_uuid_mount(mp);
error = xfs_sysfs_init(&mp->m_stats.xs_kobj, &xfs_stats_ktype,
&mp->m_kobj, "stats");
if (error)
goto out_remove_sysfs;
error = xfs_uuid_mount(mp);
if (error)
goto out_del_stats;
/*
* Set the minimum read and write sizes
*/
@ -971,6 +986,8 @@ xfs_mountfs(
xfs_da_unmount(mp);
out_remove_uuid:
xfs_uuid_unmount(mp);
out_del_stats:
xfs_sysfs_del(&mp->m_stats.xs_kobj);
out_remove_sysfs:
xfs_sysfs_del(&mp->m_kobj);
out:
@ -1047,6 +1064,7 @@ xfs_unmountfs(
xfs_warn(mp, "Unable to update superblock counters. "
"Freespace may not be correct on next mount.");
xfs_log_unmount(mp);
xfs_da_unmount(mp);
xfs_uuid_unmount(mp);
@ -1056,6 +1074,7 @@ xfs_unmountfs(
#endif
xfs_free_perag(mp);
xfs_sysfs_del(&mp->m_stats.xs_kobj);
xfs_sysfs_del(&mp->m_kobj);
}

5
fs/xfs/xfs_mount.h
View File

@ -127,6 +127,7 @@ typedef struct xfs_mount {
int64_t m_low_space[XFS_LOWSP_MAX];
/* low free space thresholds */
struct xfs_kobj m_kobj;
struct xstats m_stats; /* per-fs stats */
struct workqueue_struct *m_buf_workqueue;
struct workqueue_struct *m_data_workqueue;
@ -312,6 +313,7 @@ typedef struct xfs_perag {
int pagb_count; /* pagb slots in use */
} xfs_perag_t;
extern void xfs_uuid_table_free(void);
extern int xfs_log_sbcount(xfs_mount_t *);
extern __uint64_t xfs_default_resblks(xfs_mount_t *mp);
extern int xfs_mountfs(xfs_mount_t *mp);
@ -336,4 +338,7 @@ extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
extern void xfs_set_low_space_thresholds(struct xfs_mount *);
int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb,
xfs_off_t count_fsb);
#endif /* __XFS_MOUNT_H__ */

5
fs/xfs/xfs_pnfs.c
View File

@ -181,6 +181,11 @@ xfs_fs_map_blocks(
ASSERT(imap.br_startblock != DELAYSTARTBLOCK);
if (!nimaps || imap.br_startblock == HOLESTARTBLOCK) {
/*
* xfs_iomap_write_direct() expects to take ownership of
* the shared ilock.
*/
xfs_ilock(ip, XFS_ILOCK_SHARED);
error = xfs_iomap_write_direct(ip, offset, length,
&imap, nimaps);
if (error)

14
fs/xfs/xfs_qm.c
View File

@ -184,7 +184,7 @@ xfs_qm_dqpurge(
*/
ASSERT(!list_empty(&dqp->q_lru));
list_lru_del(&qi->qi_lru, &dqp->q_lru);
XFS_STATS_DEC(xs_qm_dquot_unused);
XFS_STATS_DEC(mp, xs_qm_dquot_unused);
xfs_qm_dqdestroy(dqp);
return 0;
@ -448,11 +448,11 @@ xfs_qm_dquot_isolate(
*/
if (dqp->q_nrefs) {
xfs_dqunlock(dqp);
XFS_STATS_INC(xs_qm_dqwants);
XFS_STATS_INC(dqp->q_mount, xs_qm_dqwants);
trace_xfs_dqreclaim_want(dqp);
list_lru_isolate(lru, &dqp->q_lru);
XFS_STATS_DEC(xs_qm_dquot_unused);
XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused);
return LRU_REMOVED;
}
@ -496,19 +496,19 @@ xfs_qm_dquot_isolate(
ASSERT(dqp->q_nrefs == 0);
list_lru_isolate_move(lru, &dqp->q_lru, &isol->dispose);
XFS_STATS_DEC(xs_qm_dquot_unused);
XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot_unused);
trace_xfs_dqreclaim_done(dqp);
XFS_STATS_INC(xs_qm_dqreclaims);
XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaims);
return LRU_REMOVED;
out_miss_busy:
trace_xfs_dqreclaim_busy(dqp);
XFS_STATS_INC(xs_qm_dqreclaim_misses);
XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses);
return LRU_SKIP;
out_unlock_dirty:
trace_xfs_dqreclaim_busy(dqp);
XFS_STATS_INC(xs_qm_dqreclaim_misses);
XFS_STATS_INC(dqp->q_mount, xs_qm_dqreclaim_misses);
xfs_dqunlock(dqp);
spin_lock(lru_lock);
return LRU_RETRY;

93
fs/xfs/xfs_stats.c
View File

@ -18,20 +18,21 @@
#include "xfs.h"
#include <linux/proc_fs.h>
DEFINE_PER_CPU(struct xfsstats, xfsstats);
struct xstats xfsstats;
static int counter_val(int idx)
static int counter_val(struct xfsstats __percpu *stats, int idx)
{
int val = 0, cpu;
for_each_possible_cpu(cpu)
val += *(((__u32 *)&per_cpu(xfsstats, cpu) + idx));
val += *(((__u32 *)per_cpu_ptr(stats, cpu) + idx));
return val;
}
static int xfs_stat_proc_show(struct seq_file *m, void *v)
int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)
{
int i, j;
int len = 0;
__uint64_t xs_xstrat_bytes = 0;
__uint64_t xs_write_bytes = 0;
__uint64_t xs_read_bytes = 0;
@ -65,43 +66,50 @@ static int xfs_stat_proc_show(struct seq_file *m, void *v)
};
/* Loop over all stats groups */
for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {
seq_printf(m, "%s", xstats[i].desc);
len += snprintf(buf + len, PATH_MAX - len, "%s",
xstats[i].desc);
/* inner loop does each group */
for (; j < xstats[i].endpoint; j++)
seq_printf(m, " %u", counter_val(j));
seq_putc(m, '\n');
len += snprintf(buf + len, PATH_MAX - len, " %u",
counter_val(stats, j));
len += snprintf(buf + len, PATH_MAX - len, "\n");
}
/* extra precision counters */
for_each_possible_cpu(i) {
xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
xs_xstrat_bytes += per_cpu_ptr(stats, i)->xs_xstrat_bytes;
xs_write_bytes += per_cpu_ptr(stats, i)->xs_write_bytes;
xs_read_bytes += per_cpu_ptr(stats, i)->xs_read_bytes;
}
seq_printf(m, "xpc %Lu %Lu %Lu\n",
len += snprintf(buf + len, PATH_MAX-len, "xpc %Lu %Lu %Lu\n",
xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
seq_printf(m, "debug %u\n",
len += snprintf(buf + len, PATH_MAX-len, "debug %u\n",
#if defined(DEBUG)
1);
#else
0);
#endif
return 0;
return len;
}
static int xfs_stat_proc_open(struct inode *inode, struct file *file)
void xfs_stats_clearall(struct xfsstats __percpu *stats)
{
return single_open(file, xfs_stat_proc_show, NULL);
}
int c;
__uint32_t vn_active;
static const struct file_operations xfs_stat_proc_fops = {
.owner = THIS_MODULE,
.open = xfs_stat_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
xfs_notice(NULL, "Clearing xfsstats");
for_each_possible_cpu(c) {
preempt_disable();
/* save vn_active, it's a universal truth! */
vn_active = per_cpu_ptr(stats, c)->vn_active;
memset(per_cpu_ptr(stats, c), 0, sizeof(*stats));
per_cpu_ptr(stats, c)->vn_active = vn_active;
preempt_enable();
}
}
/* legacy quota interfaces */
#ifdef CONFIG_XFS_QUOTA
@ -109,10 +117,8 @@ static int xqm_proc_show(struct seq_file *m, void *v)
{
/* maximum; incore; ratio free to inuse; freelist */
seq_printf(m, "%d\t%d\t%d\t%u\n",
0,
counter_val(XFSSTAT_END_XQMSTAT),
0,
counter_val(XFSSTAT_END_XQMSTAT + 1));
0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT),
0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT + 1));
return 0;
}
@ -136,7 +142,7 @@ static int xqmstat_proc_show(struct seq_file *m, void *v)
seq_printf(m, "qm");
for (j = XFSSTAT_END_IBT_V2; j < XFSSTAT_END_XQMSTAT; j++)
seq_printf(m, " %u", counter_val(j));
seq_printf(m, " %u", counter_val(xfsstats.xs_stats, j));
seq_putc(m, '\n');
return 0;
}
@ -155,44 +161,35 @@ static const struct file_operations xqmstat_proc_fops = {
};
#endif /* CONFIG_XFS_QUOTA */
#ifdef CONFIG_PROC_FS
int
xfs_init_procfs(void)
{
if (!proc_mkdir("fs/xfs", NULL))
return -ENOMEM;
if (!proc_symlink("fs/xfs/stat", NULL,
"/sys/fs/xfs/stats/stats"))
goto out;
if (!proc_create("fs/xfs/stat", 0, NULL,
&xfs_stat_proc_fops))
goto out_remove_xfs_dir;
#ifdef CONFIG_XFS_QUOTA
if (!proc_create("fs/xfs/xqmstat", 0, NULL,
&xqmstat_proc_fops))
goto out_remove_stat_file;
goto out;
if (!proc_create("fs/xfs/xqm", 0, NULL,
&xqm_proc_fops))
goto out_remove_xqmstat_file;
goto out;
#endif
return 0;
#ifdef CONFIG_XFS_QUOTA
out_remove_xqmstat_file:
remove_proc_entry("fs/xfs/xqmstat", NULL);
out_remove_stat_file:
remove_proc_entry("fs/xfs/stat", NULL);
#endif
out_remove_xfs_dir:
remove_proc_entry("fs/xfs", NULL);
out:
out:
remove_proc_subtree("fs/xfs", NULL);
return -ENOMEM;
}
void
xfs_cleanup_procfs(void)
{
#ifdef CONFIG_XFS_QUOTA
remove_proc_entry("fs/xfs/xqm", NULL);
remove_proc_entry("fs/xfs/xqmstat", NULL);
#endif
remove_proc_entry("fs/xfs/stat", NULL);
remove_proc_entry("fs/xfs", NULL);
remove_proc_subtree("fs/xfs", NULL);
}
#endif /* CONFIG_PROC_FS */

36
fs/xfs/xfs_stats.h
View File

@ -19,8 +19,6 @@
#define __XFS_STATS_H__
#if defined(CONFIG_PROC_FS) && !defined(XFS_STATS_OFF)
#include <linux/percpu.h>
/*
@ -215,15 +213,29 @@ struct xfsstats {
__uint64_t xs_read_bytes;
};
DECLARE_PER_CPU(struct xfsstats, xfsstats);
int xfs_stats_format(struct xfsstats __percpu *stats, char *buf);
void xfs_stats_clearall(struct xfsstats __percpu *stats);
extern struct xstats xfsstats;
/*
* We don't disable preempt, not too worried about poking the
* wrong CPU's stat for now (also aggregated before reporting).
*/
#define XFS_STATS_INC(v) (per_cpu(xfsstats, current_cpu()).v++)
#define XFS_STATS_DEC(v) (per_cpu(xfsstats, current_cpu()).v--)
#define XFS_STATS_ADD(v, inc) (per_cpu(xfsstats, current_cpu()).v += (inc))
#define XFS_STATS_INC(mp, v) \
do { \
per_cpu_ptr(xfsstats.xs_stats, current_cpu())->v++; \
per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->v++; \
} while (0)
#define XFS_STATS_DEC(mp, v) \
do { \
per_cpu_ptr(xfsstats.xs_stats, current_cpu())->v--; \
per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->v--; \
} while (0)
#define XFS_STATS_ADD(mp, v, inc) \
do { \
per_cpu_ptr(xfsstats.xs_stats, current_cpu())->v += (inc); \
per_cpu_ptr(mp->m_stats.xs_stats, current_cpu())->v += (inc); \
} while (0)
#if defined(CONFIG_PROC_FS)
extern int xfs_init_procfs(void);
extern void xfs_cleanup_procfs(void);
@ -231,10 +243,6 @@ extern void xfs_cleanup_procfs(void);
#else /* !CONFIG_PROC_FS */
# define XFS_STATS_INC(count)
# define XFS_STATS_DEC(count)
# define XFS_STATS_ADD(count, inc)
static inline int xfs_init_procfs(void)
{
return 0;

57
fs/xfs/xfs_super.c
View File

@ -838,17 +838,18 @@ xfs_init_mount_workqueues(
goto out_destroy_unwritten;
mp->m_reclaim_workqueue = alloc_workqueue("xfs-reclaim/%s",
WQ_FREEZABLE, 0, mp->m_fsname);
WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
if (!mp->m_reclaim_workqueue)
goto out_destroy_cil;
mp->m_log_workqueue = alloc_workqueue("xfs-log/%s",
WQ_FREEZABLE|WQ_HIGHPRI, 0, mp->m_fsname);
WQ_MEM_RECLAIM|WQ_FREEZABLE|WQ_HIGHPRI, 0,
mp->m_fsname);
if (!mp->m_log_workqueue)
goto out_destroy_reclaim;
mp->m_eofblocks_workqueue = alloc_workqueue("xfs-eofblocks/%s",
WQ_FREEZABLE, 0, mp->m_fsname);
WQ_MEM_RECLAIM|WQ_FREEZABLE, 0, mp->m_fsname);
if (!mp->m_eofblocks_workqueue)
goto out_destroy_log;
@ -922,7 +923,7 @@ xfs_fs_destroy_inode(
trace_xfs_destroy_inode(ip);
XFS_STATS_INC(vn_reclaim);
XFS_STATS_INC(ip->i_mount, vn_reclaim);
ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || ip->i_delayed_blks == 0);
@ -983,8 +984,8 @@ xfs_fs_evict_inode(
truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
XFS_STATS_INC(vn_rele);
XFS_STATS_INC(vn_remove);
XFS_STATS_INC(ip->i_mount, vn_rele);
XFS_STATS_INC(ip->i_mount, vn_remove);
xfs_inactive(ip);
}
@ -1474,9 +1475,16 @@ xfs_fs_fill_super(
if (error)
goto out_destroy_workqueues;
/* Allocate stats memory before we do operations that might use it */
mp->m_stats.xs_stats = alloc_percpu(struct xfsstats);
if (!mp->m_stats.xs_stats) {
error = -ENOMEM;
goto out_destroy_counters;
}
error = xfs_readsb(mp, flags);
if (error)
goto out_destroy_counters;
goto out_free_stats;
error = xfs_finish_flags(mp);
if (error)
@ -1545,9 +1553,11 @@ xfs_fs_fill_super(
xfs_filestream_unmount(mp);
out_free_sb:
xfs_freesb(mp);
out_free_stats:
free_percpu(mp->m_stats.xs_stats);
out_destroy_counters:
xfs_destroy_percpu_counters(mp);
out_destroy_workqueues:
out_destroy_workqueues:
xfs_destroy_mount_workqueues(mp);
out_close_devices:
xfs_close_devices(mp);
@ -1574,6 +1584,7 @@ xfs_fs_put_super(
xfs_unmountfs(mp);
xfs_freesb(mp);
free_percpu(mp->m_stats.xs_stats);
xfs_destroy_percpu_counters(mp);
xfs_destroy_mount_workqueues(mp);
xfs_close_devices(mp);
@ -1838,19 +1849,32 @@ init_xfs_fs(void)
xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj);
if (!xfs_kset) {
error = -ENOMEM;
goto out_sysctl_unregister;;
goto out_sysctl_unregister;
}
xfsstats.xs_kobj.kobject.kset = xfs_kset;
xfsstats.xs_stats = alloc_percpu(struct xfsstats);
if (!xfsstats.xs_stats) {
error = -ENOMEM;
goto out_kset_unregister;
}
error = xfs_sysfs_init(&xfsstats.xs_kobj, &xfs_stats_ktype, NULL,
"stats");
if (error)
goto out_free_stats;
#ifdef DEBUG
xfs_dbg_kobj.kobject.kset = xfs_kset;
error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug");
if (error)
goto out_kset_unregister;
goto out_remove_stats_kobj;
#endif
error = xfs_qm_init();
if (error)
goto out_remove_kobj;
goto out_remove_dbg_kobj;
error = register_filesystem(&xfs_fs_type);
if (error)
@ -1859,11 +1883,15 @@ init_xfs_fs(void)
out_qm_exit:
xfs_qm_exit();
out_remove_kobj:
out_remove_dbg_kobj:
#ifdef DEBUG
xfs_sysfs_del(&xfs_dbg_kobj);
out_kset_unregister:
out_remove_stats_kobj:
#endif
xfs_sysfs_del(&xfsstats.xs_kobj);
out_free_stats:
free_percpu(xfsstats.xs_stats);
out_kset_unregister:
kset_unregister(xfs_kset);
out_sysctl_unregister:
xfs_sysctl_unregister();
@ -1889,6 +1917,8 @@ exit_xfs_fs(void)
#ifdef DEBUG
xfs_sysfs_del(&xfs_dbg_kobj);
#endif
xfs_sysfs_del(&xfsstats.xs_kobj);
free_percpu(xfsstats.xs_stats);
kset_unregister(xfs_kset);
xfs_sysctl_unregister();
xfs_cleanup_procfs();
@ -1896,6 +1926,7 @@ exit_xfs_fs(void)
xfs_mru_cache_uninit();
xfs_destroy_workqueues();
xfs_destroy_zones();
xfs_uuid_table_free();
}
module_init(init_xfs_fs);

15
fs/xfs/xfs_sysctl.c
View File

@ -19,6 +19,7 @@
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include "xfs_error.h"
#include "xfs_stats.h"
static struct ctl_table_header *xfs_table_header;
@ -31,22 +32,12 @@ xfs_stats_clear_proc_handler(
size_t *lenp,
loff_t *ppos)
{
int c, ret, *valp = ctl->data;
__uint32_t vn_active;
int ret, *valp = ctl->data;
ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
if (!ret && write && *valp) {
xfs_notice(NULL, "Clearing xfsstats");
for_each_possible_cpu(c) {
preempt_disable();
/* save vn_active, it's a universal truth! */
vn_active = per_cpu(xfsstats, c).vn_active;
memset(&per_cpu(xfsstats, c), 0,
sizeof(struct xfsstats));
per_cpu(xfsstats, c).vn_active = vn_active;
preempt_enable();
}
xfs_stats_clearall(xfsstats.xs_stats);
xfs_stats_clear = 0;
}

201
fs/xfs/xfs_sysfs.c
View File

@ -21,11 +21,13 @@
#include "xfs_log_format.h"
#include "xfs_log.h"
#include "xfs_log_priv.h"
#include "xfs_stats.h"
struct xfs_sysfs_attr {
struct attribute attr;
ssize_t (*show)(char *buf, void *data);
ssize_t (*store)(const char *buf, size_t count, void *data);
ssize_t (*show)(struct kobject *kobject, char *buf);
ssize_t (*store)(struct kobject *kobject, const char *buf,
size_t count);
};
static inline struct xfs_sysfs_attr *
@ -38,6 +40,8 @@ to_attr(struct attribute *attr)
static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RW(name)
#define XFS_SYSFS_ATTR_RO(name) \
static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RO(name)
#define XFS_SYSFS_ATTR_WO(name) \
static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_WO(name)
#define ATTR_LIST(name) &xfs_sysfs_attr_##name.attr
@ -51,14 +55,42 @@ struct kobj_type xfs_mp_ktype = {
.release = xfs_sysfs_release,
};
STATIC ssize_t
xfs_sysfs_object_show(
struct kobject *kobject,
struct attribute *attr,
char *buf)
{
struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
return xfs_attr->show ? xfs_attr->show(kobject, buf) : 0;
}
STATIC ssize_t
xfs_sysfs_object_store(
struct kobject *kobject,
struct attribute *attr,
const char *buf,
size_t count)
{
struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
return xfs_attr->store ? xfs_attr->store(kobject, buf, count) : 0;
}
static const struct sysfs_ops xfs_sysfs_ops = {
.show = xfs_sysfs_object_show,
.store = xfs_sysfs_object_store,
};
#ifdef DEBUG
/* debug */
STATIC ssize_t
log_recovery_delay_store(
struct kobject *kobject,
const char *buf,
size_t count,
void *data)
size_t count)
{
int ret;
int val;
@ -77,8 +109,8 @@ log_recovery_delay_store(
STATIC ssize_t
log_recovery_delay_show(
char *buf,
void *data)
struct kobject *kobject,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay);
}
@ -89,52 +121,87 @@ static struct attribute *xfs_dbg_attrs[] = {
NULL,
};
STATIC ssize_t
xfs_dbg_show(
struct kobject *kobject,
struct attribute *attr,
char *buf)
{
struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
return xfs_attr->show ? xfs_attr->show(buf, NULL) : 0;
}
STATIC ssize_t
xfs_dbg_store(
struct kobject *kobject,
struct attribute *attr,
const char *buf,
size_t count)
{
struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
return xfs_attr->store ? xfs_attr->store(buf, count, NULL) : 0;
}
static struct sysfs_ops xfs_dbg_ops = {
.show = xfs_dbg_show,
.store = xfs_dbg_store,
};
struct kobj_type xfs_dbg_ktype = {
.release = xfs_sysfs_release,
.sysfs_ops = &xfs_dbg_ops,
.sysfs_ops = &xfs_sysfs_ops,
.default_attrs = xfs_dbg_attrs,
};
#endif /* DEBUG */
/* stats */
static inline struct xstats *
to_xstats(struct kobject *kobject)
{
struct xfs_kobj *kobj = to_kobj(kobject);
return container_of(kobj, struct xstats, xs_kobj);
}
STATIC ssize_t
stats_show(
struct kobject *kobject,
char *buf)
{
struct xstats *stats = to_xstats(kobject);
return xfs_stats_format(stats->xs_stats, buf);
}
XFS_SYSFS_ATTR_RO(stats);
STATIC ssize_t
stats_clear_store(
struct kobject *kobject,
const char *buf,
size_t count)
{
int ret;
int val;
struct xstats *stats = to_xstats(kobject);
ret = kstrtoint(buf, 0, &val);
if (ret)
return ret;
if (val != 1)
return -EINVAL;
xfs_stats_clearall(stats->xs_stats);
return count;
}
XFS_SYSFS_ATTR_WO(stats_clear);
static struct attribute *xfs_stats_attrs[] = {
ATTR_LIST(stats),
ATTR_LIST(stats_clear),
NULL,
};
struct kobj_type xfs_stats_ktype = {
.release = xfs_sysfs_release,
.sysfs_ops = &xfs_sysfs_ops,
.default_attrs = xfs_stats_attrs,
};
/* xlog */
static inline struct xlog *
to_xlog(struct kobject *kobject)
{
struct xfs_kobj *kobj = to_kobj(kobject);
return container_of(kobj, struct xlog, l_kobj);
}
STATIC ssize_t
log_head_lsn_show(
char *buf,
void *data)
struct kobject *kobject,
char *buf)
{
struct xlog *log = data;
int cycle;
int block;
struct xlog *log = to_xlog(kobject);
spin_lock(&log->l_icloglock);
cycle = log->l_curr_cycle;
@ -147,12 +214,12 @@ XFS_SYSFS_ATTR_RO(log_head_lsn);
STATIC ssize_t
log_tail_lsn_show(
char *buf,
void *data)
struct kobject *kobject,
char *buf)
{
struct xlog *log = data;
int cycle;
int block;
struct xlog *log = to_xlog(kobject);
xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block);
return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
@ -161,12 +228,13 @@ XFS_SYSFS_ATTR_RO(log_tail_lsn);
STATIC ssize_t
reserve_grant_head_show(
char *buf,
void *data)
struct kobject *kobject,
char *buf)
{
struct xlog *log = data;
int cycle;
int bytes;
struct xlog *log = to_xlog(kobject);
xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes);
return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
@ -175,12 +243,12 @@ XFS_SYSFS_ATTR_RO(reserve_grant_head);
STATIC ssize_t
write_grant_head_show(
char *buf,
void *data)
struct kobject *kobject,
char *buf)
{
struct xlog *log = data;
int cycle;
int bytes;
struct xlog *log = to_xlog(kobject);
xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes);
return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
@ -195,45 +263,8 @@ static struct attribute *xfs_log_attrs[] = {
NULL,
};
static inline struct xlog *
to_xlog(struct kobject *kobject)
{
struct xfs_kobj *kobj = to_kobj(kobject);
return container_of(kobj, struct xlog, l_kobj);
}
STATIC ssize_t
xfs_log_show(
struct kobject *kobject,
struct attribute *attr,
char *buf)
{
struct xlog *log = to_xlog(kobject);
struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
return xfs_attr->show ? xfs_attr->show(buf, log) : 0;
}
STATIC ssize_t
xfs_log_store(
struct kobject *kobject,
struct attribute *attr,
const char *buf,
size_t count)
{
struct xlog *log = to_xlog(kobject);
struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
return xfs_attr->store ? xfs_attr->store(buf, count, log) : 0;
}
static struct sysfs_ops xfs_log_ops = {
.show = xfs_log_show,
.store = xfs_log_store,
};
struct kobj_type xfs_log_ktype = {
.release = xfs_sysfs_release,
.sysfs_ops = &xfs_log_ops,
.sysfs_ops = &xfs_sysfs_ops,
.default_attrs = xfs_log_attrs,
};

1
fs/xfs/xfs_sysfs.h
View File

@ -22,6 +22,7 @@
extern struct kobj_type xfs_mp_ktype; /* xfs_mount */
extern struct kobj_type xfs_dbg_ktype; /* debug */
extern struct kobj_type xfs_log_ktype; /* xlog */
extern struct kobj_type xfs_stats_ktype; /* stats */
static inline struct xfs_kobj *
to_kobj(struct kobject *kobject)

2
fs/xfs/xfs_trace.h
View File

@ -689,6 +689,7 @@ DEFINE_INODE_EVENT(xfs_inode_free_eofblocks_invalid);
DEFINE_INODE_EVENT(xfs_filemap_fault);
DEFINE_INODE_EVENT(xfs_filemap_pmd_fault);
DEFINE_INODE_EVENT(xfs_filemap_page_mkwrite);
DEFINE_INODE_EVENT(xfs_filemap_pfn_mkwrite);
DECLARE_EVENT_CLASS(xfs_iref_class,
TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip),
@ -1312,6 +1313,7 @@ DEFINE_SIMPLE_IO_EVENT(xfs_delalloc_enospc);
DEFINE_SIMPLE_IO_EVENT(xfs_unwritten_convert);
DEFINE_SIMPLE_IO_EVENT(xfs_get_blocks_notfound);
DEFINE_SIMPLE_IO_EVENT(xfs_setfilesize);
DEFINE_SIMPLE_IO_EVENT(xfs_zero_eof);
DECLARE_EVENT_CLASS(xfs_itrunc_class,
TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size),

6
fs/xfs/xfs_trans.c
View File

@ -930,9 +930,9 @@ __xfs_trans_commit(
*/
if (sync) {
error = _xfs_log_force_lsn(mp, commit_lsn, XFS_LOG_SYNC, NULL);
XFS_STATS_INC(xs_trans_sync);
XFS_STATS_INC(mp, xs_trans_sync);
} else {
XFS_STATS_INC(xs_trans_async);
XFS_STATS_INC(mp, xs_trans_async);
}
return error;
@ -955,7 +955,7 @@ out_unreserve:
xfs_trans_free_items(tp, NULLCOMMITLSN, !!error);
xfs_trans_free(tp);
XFS_STATS_INC(xs_trans_empty);
XFS_STATS_INC(mp, xs_trans_empty);
return error;
}

13
fs/xfs/xfs_trans_ail.c
View File

@ -349,7 +349,7 @@ xfsaild_push(
xfs_ail_min_lsn(ailp))) {
ailp->xa_log_flush = 0;
XFS_STATS_INC(xs_push_ail_flush);
XFS_STATS_INC(mp, xs_push_ail_flush);
xfs_log_force(mp, XFS_LOG_SYNC);
}
@ -371,7 +371,7 @@ xfsaild_push(
goto out_done;
}
XFS_STATS_INC(xs_push_ail);
XFS_STATS_INC(mp, xs_push_ail);
lsn = lip->li_lsn;
while ((XFS_LSN_CMP(lip->li_lsn, target) <= 0)) {
@ -385,7 +385,7 @@ xfsaild_push(
lock_result = lip->li_ops->iop_push(lip, &ailp->xa_buf_list);
switch (lock_result) {
case XFS_ITEM_SUCCESS:
XFS_STATS_INC(xs_push_ail_success);
XFS_STATS_INC(mp, xs_push_ail_success);
trace_xfs_ail_push(lip);
ailp->xa_last_pushed_lsn = lsn;
@ -403,7 +403,7 @@ xfsaild_push(
* re-try the flushing relatively soon if most of the
* AIL is beeing flushed.
*/
XFS_STATS_INC(xs_push_ail_flushing);
XFS_STATS_INC(mp, xs_push_ail_flushing);
trace_xfs_ail_flushing(lip);
flushing++;
@ -411,14 +411,14 @@ xfsaild_push(
break;
case XFS_ITEM_PINNED:
XFS_STATS_INC(xs_push_ail_pinned);
XFS_STATS_INC(mp, xs_push_ail_pinned);
trace_xfs_ail_pinned(lip);
stuck++;
ailp->xa_log_flush++;
break;
case XFS_ITEM_LOCKED:
XFS_STATS_INC(xs_push_ail_locked);
XFS_STATS_INC(mp, xs_push_ail_locked);
trace_xfs_ail_locked(lip);
stuck++;
@ -497,6 +497,7 @@ xfsaild(
long tout = 0; /* milliseconds */
current->flags |= PF_MEMALLOC;
set_freezable();
while (!kthread_should_stop()) {
if (tout && tout <= 20)

9
fs/xfs/xfs_trans_inode.c
View File

@ -107,6 +107,15 @@ xfs_trans_log_inode(
ASSERT(ip->i_itemp != NULL);
ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
/*
* Record the specific change for fdatasync optimisation. This
* allows fdatasync to skip log forces for inodes that are only
* timestamp dirty. We do this before the change count so that
* the core being logged in this case does not impact on fdatasync
* behaviour.
*/
ip->i_itemp->ili_fsync_fields |= flags;
/*
* First time we log the inode in a transaction, bump the inode change
* counter if it is configured for this to occur. We don't use

31
fs/xfs/xfs_xattr.c
View File

@ -53,11 +53,34 @@ xfs_xattr_get(struct dentry *dentry, const char *name,
return asize;
}
void
xfs_forget_acl(
struct inode *inode,
const char *name,
int xflags)
{
/*
* Invalidate any cached ACLs if the user has bypassed the ACL
* interface. We don't validate the content whatsoever so it is caller
* responsibility to provide data in valid format and ensure i_mode is
* consistent.
*/
if (xflags & ATTR_ROOT) {
#ifdef CONFIG_XFS_POSIX_ACL
if (!strcmp(name, SGI_ACL_FILE))
forget_cached_acl(inode, ACL_TYPE_ACCESS);
else if (!strcmp(name, SGI_ACL_DEFAULT))
forget_cached_acl(inode, ACL_TYPE_DEFAULT);
#endif
}
}
static int
xfs_xattr_set(struct dentry *dentry, const char *name, const void *value,
size_t size, int flags, int xflags)
{
struct xfs_inode *ip = XFS_I(d_inode(dentry));
struct xfs_inode *ip = XFS_I(d_inode(dentry));
int error;
if (strcmp(name, "") == 0)
return -EINVAL;
@ -70,8 +93,12 @@ xfs_xattr_set(struct dentry *dentry, const char *name, const void *value,
if (!value)
return xfs_attr_remove(ip, (unsigned char *)name, xflags);
return xfs_attr_set(ip, (unsigned char *)name,
error = xfs_attr_set(ip, (unsigned char *)name,
(void *)value, size, xflags);
if (!error)
xfs_forget_acl(d_inode(dentry), name, xflags);
return error;
}
static const struct xattr_handler xfs_xattr_user_handler = {