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xfs: support deferred bmap updates on the attr fork

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The deferred bmap update log item has always supported the attr fork, so
plumb this in so that higher layers can access this.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong 2024-02-22 12:44:32 -08:00
parent 1b5453baed
commit 52f807067b
4 changed files with 29 additions and 38 deletions
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47
fs/xfs/libxfs/xfs_bmap.c
View File

@ -6172,17 +6172,8 @@ del_cursor:
return error;
}
/* Deferred mapping is only for real extents in the data fork. */
static bool
xfs_bmap_is_update_needed(
struct xfs_bmbt_irec *bmap)
{
return bmap->br_startblock != HOLESTARTBLOCK &&
bmap->br_startblock != DELAYSTARTBLOCK;
}
/* Record a bmap intent. */
static int
static inline void
__xfs_bmap_add(
struct xfs_trans *tp,
enum xfs_bmap_intent_type type,
@ -6192,6 +6183,11 @@ __xfs_bmap_add(
{
struct xfs_bmap_intent *bi;
if ((whichfork != XFS_DATA_FORK && whichfork != XFS_ATTR_FORK) ||
bmap->br_startblock == HOLESTARTBLOCK ||
bmap->br_startblock == DELAYSTARTBLOCK)
return;
bi = kmem_cache_alloc(xfs_bmap_intent_cache, GFP_KERNEL | __GFP_NOFAIL);
INIT_LIST_HEAD(&bi->bi_list);
bi->bi_type = type;
@ -6200,7 +6196,6 @@ __xfs_bmap_add(
bi->bi_bmap = *bmap;
xfs_bmap_defer_add(tp, bi);
return 0;
}
/* Map an extent into a file. */
@ -6208,12 +6203,10 @@ void
xfs_bmap_map_extent(
struct xfs_trans *tp,
struct xfs_inode *ip,
int whichfork,
struct xfs_bmbt_irec *PREV)
{
if (!xfs_bmap_is_update_needed(PREV))
return;
__xfs_bmap_add(tp, XFS_BMAP_MAP, ip, XFS_DATA_FORK, PREV);
__xfs_bmap_add(tp, XFS_BMAP_MAP, ip, whichfork, PREV);
}
/* Unmap an extent out of a file. */
@ -6221,12 +6214,10 @@ void
xfs_bmap_unmap_extent(
struct xfs_trans *tp,
struct xfs_inode *ip,
int whichfork,
struct xfs_bmbt_irec *PREV)
{
if (!xfs_bmap_is_update_needed(PREV))
return;
__xfs_bmap_add(tp, XFS_BMAP_UNMAP, ip, XFS_DATA_FORK, PREV);
__xfs_bmap_add(tp, XFS_BMAP_UNMAP, ip, whichfork, PREV);
}
/*
@ -6240,29 +6231,29 @@ xfs_bmap_finish_one(
{
struct xfs_bmbt_irec *bmap = &bi->bi_bmap;
int error = 0;
int flags = 0;
if (bi->bi_whichfork == XFS_ATTR_FORK)
flags |= XFS_BMAPI_ATTRFORK;
ASSERT(tp->t_highest_agno == NULLAGNUMBER);
trace_xfs_bmap_deferred(bi);
if (WARN_ON_ONCE(bi->bi_whichfork != XFS_DATA_FORK)) {
xfs_bmap_mark_sick(bi->bi_owner, bi->bi_whichfork);
return -EFSCORRUPTED;
}
if (XFS_TEST_ERROR(false, tp->t_mountp,
XFS_ERRTAG_BMAP_FINISH_ONE))
if (XFS_TEST_ERROR(false, tp->t_mountp, XFS_ERRTAG_BMAP_FINISH_ONE))
return -EIO;
switch (bi->bi_type) {
case XFS_BMAP_MAP:
error = xfs_bmapi_remap(tp, bi->bi_owner, bmap->br_startoff,
bmap->br_blockcount, bmap->br_startblock, 0);
bmap->br_blockcount, bmap->br_startblock,
flags);
bmap->br_blockcount = 0;
break;
case XFS_BMAP_UNMAP:
error = __xfs_bunmapi(tp, bi->bi_owner, bmap->br_startoff,
&bmap->br_blockcount, XFS_BMAPI_REMAP, 1);
&bmap->br_blockcount, flags | XFS_BMAPI_REMAP,
1);
break;
default:
ASSERT(0);

4
fs/xfs/libxfs/xfs_bmap.h
View File

@ -247,9 +247,9 @@ struct xfs_bmap_intent {
int xfs_bmap_finish_one(struct xfs_trans *tp, struct xfs_bmap_intent *bi);
void xfs_bmap_map_extent(struct xfs_trans *tp, struct xfs_inode *ip,
struct xfs_bmbt_irec *imap);
int whichfork, struct xfs_bmbt_irec *imap);
void xfs_bmap_unmap_extent(struct xfs_trans *tp, struct xfs_inode *ip,
struct xfs_bmbt_irec *imap);
int whichfork, struct xfs_bmbt_irec *imap);
static inline uint32_t xfs_bmap_fork_to_state(int whichfork)
{

8
fs/xfs/xfs_bmap_util.c
View File

@ -1305,16 +1305,16 @@ xfs_swap_extent_rmap(
}
/* Remove the mapping from the donor file. */
xfs_bmap_unmap_extent(tp, tip, &uirec);
xfs_bmap_unmap_extent(tp, tip, XFS_DATA_FORK, &uirec);
/* Remove the mapping from the source file. */
xfs_bmap_unmap_extent(tp, ip, &irec);
xfs_bmap_unmap_extent(tp, ip, XFS_DATA_FORK, &irec);
/* Map the donor file's blocks into the source file. */
xfs_bmap_map_extent(tp, ip, &uirec);
xfs_bmap_map_extent(tp, ip, XFS_DATA_FORK, &uirec);
/* Map the source file's blocks into the donor file. */
xfs_bmap_map_extent(tp, tip, &irec);
xfs_bmap_map_extent(tp, tip, XFS_DATA_FORK, &irec);
error = xfs_defer_finish(tpp);
tp = *tpp;

8
fs/xfs/xfs_reflink.c
View File

@ -806,7 +806,7 @@ xfs_reflink_end_cow_extent(
* If the extent we're remapping is backed by storage (written
* or not), unmap the extent and drop its refcount.
*/
xfs_bmap_unmap_extent(tp, ip, &data);
xfs_bmap_unmap_extent(tp, ip, XFS_DATA_FORK, &data);
xfs_refcount_decrease_extent(tp, &data);
xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT,
-data.br_blockcount);
@ -830,7 +830,7 @@ xfs_reflink_end_cow_extent(
xfs_refcount_free_cow_extent(tp, del.br_startblock, del.br_blockcount);
/* Map the new blocks into the data fork. */
xfs_bmap_map_extent(tp, ip, &del);
xfs_bmap_map_extent(tp, ip, XFS_DATA_FORK, &del);
/* Charge this new data fork mapping to the on-disk quota. */
xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_DELBCOUNT,
@ -1294,7 +1294,7 @@ xfs_reflink_remap_extent(
* If the extent we're unmapping is backed by storage (written
* or not), unmap the extent and drop its refcount.
*/
xfs_bmap_unmap_extent(tp, ip, &smap);
xfs_bmap_unmap_extent(tp, ip, XFS_DATA_FORK, &smap);
xfs_refcount_decrease_extent(tp, &smap);
qdelta -= smap.br_blockcount;
} else if (smap.br_startblock == DELAYSTARTBLOCK) {
@ -1319,7 +1319,7 @@ xfs_reflink_remap_extent(
*/
if (dmap_written) {
xfs_refcount_increase_extent(tp, dmap);
xfs_bmap_map_extent(tp, ip, dmap);
xfs_bmap_map_extent(tp, ip, XFS_DATA_FORK, dmap);
qdelta += dmap->br_blockcount;
}