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We have an inode number handling change, prompted by s390x which is

Browse Source 
a 64-bit architecture with a 32-bit ino_t, a patch to disallow leases
 to avoid potential data integrity issues when CephFS is re-exported
 via NFS or CIFS and a fix for the bulk of W=1 compilation warnings.
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Merge tag 'ceph-for-5.9-rc3' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "We have an inode number handling change, prompted by s390x which is a
  64-bit architecture with a 32-bit ino_t, a patch to disallow leases to
  avoid potential data integrity issues when CephFS is re-exported via
  NFS or CIFS and a fix for the bulk of W=1 compilation warnings"

* tag 'ceph-for-5.9-rc3' of git://github.com/ceph/ceph-client:
  ceph: don't allow setlease on cephfs
  ceph: fix inode number handling on arches with 32-bit ino_t
  libceph: add __maybe_unused to DEFINE_CEPH_FEATURE
This commit is contained in:
Linus Torvalds 2020-08-28 10:33:04 -07:00
commit b0bfd5eca9
9 changed files with 79 additions and 81 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
fs/ceph/caps.c
View File

@ -887,8 +887,8 @@ int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int touch)
int have = ci->i_snap_caps;
if ((have & mask) == mask) {
dout("__ceph_caps_issued_mask ino 0x%lx snap issued %s"
" (mask %s)\n", ci->vfs_inode.i_ino,
dout("__ceph_caps_issued_mask ino 0x%llx snap issued %s"
" (mask %s)\n", ceph_ino(&ci->vfs_inode),
ceph_cap_string(have),
ceph_cap_string(mask));
return 1;
@ -899,8 +899,8 @@ int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int touch)
if (!__cap_is_valid(cap))
continue;
if ((cap->issued & mask) == mask) {
dout("__ceph_caps_issued_mask ino 0x%lx cap %p issued %s"
" (mask %s)\n", ci->vfs_inode.i_ino, cap,
dout("__ceph_caps_issued_mask ino 0x%llx cap %p issued %s"
" (mask %s)\n", ceph_ino(&ci->vfs_inode), cap,
ceph_cap_string(cap->issued),
ceph_cap_string(mask));
if (touch)
@ -911,8 +911,8 @@ int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int touch)
/* does a combination of caps satisfy mask? */
have |= cap->issued;
if ((have & mask) == mask) {
dout("__ceph_caps_issued_mask ino 0x%lx combo issued %s"
" (mask %s)\n", ci->vfs_inode.i_ino,
dout("__ceph_caps_issued_mask ino 0x%llx combo issued %s"
" (mask %s)\n", ceph_ino(&ci->vfs_inode),
ceph_cap_string(cap->issued),
ceph_cap_string(mask));
if (touch) {
@ -2872,7 +2872,7 @@ int ceph_get_caps(struct file *filp, int need, int want,
struct cap_wait cw;
DEFINE_WAIT_FUNC(wait, woken_wake_function);
cw.ino = inode->i_ino;
cw.ino = ceph_ino(inode);
cw.tgid = current->tgid;
cw.need = need;
cw.want = want;

4
fs/ceph/debugfs.c
View File

@ -202,7 +202,7 @@ static int caps_show_cb(struct inode *inode, struct ceph_cap *cap, void *p)
{
struct seq_file *s = p;
seq_printf(s, "0x%-17lx%-17s%-17s\n", inode->i_ino,
seq_printf(s, "0x%-17llx%-17s%-17s\n", ceph_ino(inode),
ceph_cap_string(cap->issued),
ceph_cap_string(cap->implemented));
return 0;
@ -247,7 +247,7 @@ static int caps_show(struct seq_file *s, void *p)
spin_lock(&mdsc->caps_list_lock);
list_for_each_entry(cw, &mdsc->cap_wait_list, list) {
seq_printf(s, "%-13d0x%-17lx%-17s%-17s\n", cw->tgid, cw->ino,
seq_printf(s, "%-13d0x%-17llx%-17s%-17s\n", cw->tgid, cw->ino,
ceph_cap_string(cw->need),
ceph_cap_string(cw->want));
}

31
fs/ceph/dir.c
View File

@ -259,9 +259,7 @@ static int __dcache_readdir(struct file *file, struct dir_context *ctx,
dentry, dentry, d_inode(dentry));
ctx->pos = di->offset;
if (!dir_emit(ctx, dentry->d_name.name,
dentry->d_name.len,
ceph_translate_ino(dentry->d_sb,
d_inode(dentry)->i_ino),
dentry->d_name.len, ceph_present_inode(d_inode(dentry)),
d_inode(dentry)->i_mode >> 12)) {
dput(dentry);
err = 0;
@ -324,18 +322,21 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
/* always start with . and .. */
if (ctx->pos == 0) {
dout("readdir off 0 -> '.'\n");
if (!dir_emit(ctx, ".", 1,
ceph_translate_ino(inode->i_sb, inode->i_ino),
if (!dir_emit(ctx, ".", 1, ceph_present_inode(inode),
inode->i_mode >> 12))
return 0;
ctx->pos = 1;
}
if (ctx->pos == 1) {
ino_t ino = parent_ino(file->f_path.dentry);
u64 ino;
struct dentry *dentry = file->f_path.dentry;
spin_lock(&dentry->d_lock);
ino = ceph_present_inode(dentry->d_parent->d_inode);
spin_unlock(&dentry->d_lock);
dout("readdir off 1 -> '..'\n");
if (!dir_emit(ctx, "..", 2,
ceph_translate_ino(inode->i_sb, ino),
inode->i_mode >> 12))
if (!dir_emit(ctx, "..", 2, ino, inode->i_mode >> 12))
return 0;
ctx->pos = 2;
}
@ -507,9 +508,6 @@ more:
}
for (; i < rinfo->dir_nr; i++) {
struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i;
struct ceph_vino vino;
ino_t ino;
u32 ftype;
BUG_ON(rde->offset < ctx->pos);
@ -519,13 +517,10 @@ more:
rde->name_len, rde->name, &rde->inode.in);
BUG_ON(!rde->inode.in);
ftype = le32_to_cpu(rde->inode.in->mode) >> 12;
vino.ino = le64_to_cpu(rde->inode.in->ino);
vino.snap = le64_to_cpu(rde->inode.in->snapid);
ino = ceph_vino_to_ino(vino);
if (!dir_emit(ctx, rde->name, rde->name_len,
ceph_translate_ino(inode->i_sb, ino), ftype)) {
ceph_present_ino(inode->i_sb, le64_to_cpu(rde->inode.in->ino)),
le32_to_cpu(rde->inode.in->mode) >> 12)) {
dout("filldir stopping us...\n");
return 0;
}
@ -1161,7 +1156,7 @@ retry:
if (try_async && op == CEPH_MDS_OP_UNLINK &&
(req->r_dir_caps = get_caps_for_async_unlink(dir, dentry))) {
dout("async unlink on %lu/%.*s caps=%s", dir->i_ino,
dout("async unlink on %llu/%.*s caps=%s", ceph_ino(dir),
dentry->d_name.len, dentry->d_name.name,
ceph_cap_string(req->r_dir_caps));
set_bit(CEPH_MDS_R_ASYNC, &req->r_req_flags);

5
fs/ceph/file.c
View File

@ -630,8 +630,8 @@ static int ceph_finish_async_create(struct inode *dir, struct dentry *dentry,
} else {
struct dentry *dn;
dout("%s d_adding new inode 0x%llx to 0x%lx/%s\n", __func__,
vino.ino, dir->i_ino, dentry->d_name.name);
dout("%s d_adding new inode 0x%llx to 0x%llx/%s\n", __func__,
vino.ino, ceph_ino(dir), dentry->d_name.name);
ceph_dir_clear_ordered(dir);
ceph_init_inode_acls(inode, as_ctx);
if (inode->i_state & I_NEW) {
@ -2507,6 +2507,7 @@ const struct file_operations ceph_file_fops = {
.mmap = ceph_mmap,
.fsync = ceph_fsync,
.lock = ceph_lock,
.setlease = simple_nosetlease,
.flock = ceph_flock,
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,

19
fs/ceph/inode.c
View File

@ -41,8 +41,10 @@ static void ceph_inode_work(struct work_struct *work);
*/
static int ceph_set_ino_cb(struct inode *inode, void *data)
{
ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data);
struct ceph_inode_info *ci = ceph_inode(inode);
ci->i_vino = *(struct ceph_vino *)data;
inode->i_ino = ceph_vino_to_ino_t(ci->i_vino);
inode_set_iversion_raw(inode, 0);
return 0;
}
@ -50,17 +52,14 @@ static int ceph_set_ino_cb(struct inode *inode, void *data)
struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino)
{
struct inode *inode;
ino_t t = ceph_vino_to_ino(vino);
inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino);
inode = iget5_locked(sb, (unsigned long)vino.ino, ceph_ino_compare,
ceph_set_ino_cb, &vino);
if (!inode)
return ERR_PTR(-ENOMEM);
if (inode->i_state & I_NEW)
dout("get_inode created new inode %p %llx.%llx ino %llx\n",
inode, ceph_vinop(inode), (u64)inode->i_ino);
dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino,
vino.snap, inode);
dout("get_inode on %llu=%llx.%llx got %p new %d\n", ceph_present_inode(inode),
ceph_vinop(inode), inode, !!(inode->i_state & I_NEW));
return inode;
}
@ -2378,7 +2377,7 @@ int ceph_getattr(const struct path *path, struct kstat *stat,
}
generic_fillattr(inode, stat);
stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino);
stat->ino = ceph_present_inode(inode);
/*
* btime on newly-allocated inodes is 0, so if this is still set to

2
fs/ceph/mds_client.h
View File

@ -372,7 +372,7 @@ struct ceph_quotarealm_inode {
struct cap_wait {
struct list_head list;
unsigned long ino;
u64 ino;
pid_t tgid;
int need;
int want;

4
fs/ceph/quota.c
View File

@ -23,12 +23,12 @@ static inline bool ceph_has_realms_with_quotas(struct inode *inode)
{
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
struct super_block *sb = mdsc->fsc->sb;
struct inode *root = d_inode(sb->s_root);
if (atomic64_read(&mdsc->quotarealms_count) > 0)
return true;
/* if root is the real CephFS root, we don't have quota realms */
if (sb->s_root->d_inode &&
(sb->s_root->d_inode->i_ino == CEPH_INO_ROOT))
if (root && ceph_ino(root) == CEPH_INO_ROOT)
return false;
/* otherwise, we can't know for sure */
return true;

73
fs/ceph/super.h
View File

@ -457,15 +457,7 @@ ceph_vino(const struct inode *inode)
return ceph_inode(inode)->i_vino;
}
/*
* ino_t is <64 bits on many architectures, blech.
*
* i_ino (kernel inode) st_ino (userspace)
* i386 32 32
* x86_64+ino32 64 32
* x86_64 64 64
*/
static inline u32 ceph_ino_to_ino32(__u64 vino)
static inline u32 ceph_ino_to_ino32(u64 vino)
{
u32 ino = vino & 0xffffffff;
ino ^= vino >> 32;
@ -475,35 +467,18 @@ static inline u32 ceph_ino_to_ino32(__u64 vino)
}
/*
* kernel i_ino value
* Inode numbers in cephfs are 64 bits, but inode->i_ino is 32-bits on
* some arches. We generally do not use this value inside the ceph driver, but
* we do want to set it to something, so that generic vfs code has an
* appropriate value for tracepoints and the like.
*/
static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
static inline ino_t ceph_vino_to_ino_t(struct ceph_vino vino)
{
#if BITS_PER_LONG == 32
return ceph_ino_to_ino32(vino.ino);
#else
if (sizeof(ino_t) == sizeof(u32))
return ceph_ino_to_ino32(vino.ino);
return (ino_t)vino.ino;
#endif
}
/*
* user-visible ino (stat, filldir)
*/
#if BITS_PER_LONG == 32
static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
{
return ino;
}
#else
static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
{
if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))
ino = ceph_ino_to_ino32(ino);
return ino;
}
#endif
/* for printf-style formatting */
#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
@ -511,11 +486,34 @@ static inline u64 ceph_ino(struct inode *inode)
{
return ceph_inode(inode)->i_vino.ino;
}
static inline u64 ceph_snap(struct inode *inode)
{
return ceph_inode(inode)->i_vino.snap;
}
/**
* ceph_present_ino - format an inode number for presentation to userland
* @sb: superblock where the inode lives
* @ino: inode number to (possibly) convert
*
* If the user mounted with the ino32 option, then the 64-bit value needs
* to be converted to something that can fit inside 32 bits. Note that
* internal kernel code never uses this value, so this is entirely for
* userland consumption.
*/
static inline u64 ceph_present_ino(struct super_block *sb, u64 ino)
{
if (unlikely(ceph_test_mount_opt(ceph_sb_to_client(sb), INO32)))
return ceph_ino_to_ino32(ino);
return ino;
}
static inline u64 ceph_present_inode(struct inode *inode)
{
return ceph_present_ino(inode->i_sb, ceph_ino(inode));
}
static inline int ceph_ino_compare(struct inode *inode, void *data)
{
struct ceph_vino *pvino = (struct ceph_vino *)data;
@ -524,11 +522,16 @@ static inline int ceph_ino_compare(struct inode *inode, void *data)
ci->i_vino.snap == pvino->snap;
}
static inline struct inode *ceph_find_inode(struct super_block *sb,
struct ceph_vino vino)
{
ino_t t = ceph_vino_to_ino(vino);
return ilookup5(sb, t, ceph_ino_compare, &vino);
/*
* NB: The hashval will be run through the fs/inode.c hash function
* anyway, so there is no need to squash the inode number down to
* 32-bits first. Just use low-order bits on arches with 32-bit long.
*/
return ilookup5(sb, (unsigned long)vino.ino, ceph_ino_compare, &vino);
}

8
include/linux/ceph/ceph_features.h
View File

@ -11,14 +11,14 @@
#define CEPH_FEATURE_INCARNATION_2 (1ull<<57) // CEPH_FEATURE_SERVER_JEWEL
#define DEFINE_CEPH_FEATURE(bit, incarnation, name) \
static const uint64_t CEPH_FEATURE_##name = (1ULL<<bit); \
static const uint64_t CEPH_FEATUREMASK_##name = \
static const uint64_t __maybe_unused CEPH_FEATURE_##name = (1ULL<<bit); \
static const uint64_t __maybe_unused CEPH_FEATUREMASK_##name = \
(1ULL<<bit | CEPH_FEATURE_INCARNATION_##incarnation);
/* this bit is ignored but still advertised by release *when* */
#define DEFINE_CEPH_FEATURE_DEPRECATED(bit, incarnation, name, when) \
static const uint64_t DEPRECATED_CEPH_FEATURE_##name = (1ULL<<bit); \
static const uint64_t DEPRECATED_CEPH_FEATUREMASK_##name = \
static const uint64_t __maybe_unused DEPRECATED_CEPH_FEATURE_##name = (1ULL<<bit); \
static const uint64_t __maybe_unused DEPRECATED_CEPH_FEATUREMASK_##name = \
(1ULL<<bit | CEPH_FEATURE_INCARNATION_##incarnation);
/*