Cap message and request reply from non-auth MDS may carry stale
information (corresponding locks are in LOCK states) even they
have the newest inode version. So client should update inode fields
according to issued caps.
Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
---
fs/ceph/caps.c | 58 ++++++++++++++++++++----------------
fs/ceph/inode.c | 70 ++++++++++++++++++++++++--------------------
include/linux/ceph/ceph_fs.h | 2 ++
3 files changed, 73 insertions(+), 57 deletions(-)
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index de39a03..5f6d24e 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -2476,7 +2476,8 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
__check_cap_issue(ci, cap, newcaps);
- if ((issued & CEPH_CAP_AUTH_EXCL) == 0) {
+ if ((newcaps & CEPH_CAP_AUTH_SHARED) &&
+ (issued & CEPH_CAP_AUTH_EXCL) == 0) {
inode->i_mode = le32_to_cpu(grant->mode);
inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(grant->uid));
inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(grant->gid));
@@ -2485,7 +2486,8 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
from_kgid(&init_user_ns, inode->i_gid));
}
- if ((issued & CEPH_CAP_LINK_EXCL) == 0) {
+ if ((newcaps & CEPH_CAP_AUTH_SHARED) &&
+ (issued & CEPH_CAP_LINK_EXCL) == 0) {
set_nlink(inode, le32_to_cpu(grant->nlink));
if (inode->i_nlink == 0 &&
(newcaps & (CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL)))
@@ -2512,31 +2514,35 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant,
if ((issued & CEPH_CAP_FILE_CACHE) && ci->i_rdcache_gen > 1)
queue_revalidate = 1;
- /* size/ctime/mtime/atime? */
- queue_trunc = ceph_fill_file_size(inode, issued,
- le32_to_cpu(grant->truncate_seq),
- le64_to_cpu(grant->truncate_size),
- size);
- ceph_decode_timespec(&mtime, &grant->mtime);
- ceph_decode_timespec(&atime, &grant->atime);
- ceph_decode_timespec(&ctime, &grant->ctime);
- ceph_fill_file_time(inode, issued,
- le32_to_cpu(grant->time_warp_seq), &ctime, &mtime,
- &atime);
-
-
- /* file layout may have changed */
- ci->i_layout = grant->layout;
-
- /* max size increase? */
- if (ci->i_auth_cap == cap && max_size != ci->i_max_size) {
- dout("max_size %lld -> %llu\n", ci->i_max_size, max_size);
- ci->i_max_size = max_size;
- if (max_size >= ci->i_wanted_max_size) {
- ci->i_wanted_max_size = 0; /* reset */
- ci->i_requested_max_size = 0;
+ if (newcaps & CEPH_CAP_ANY_RD) {
+ /* ctime/mtime/atime? */
+ ceph_decode_timespec(&mtime, &grant->mtime);
+ ceph_decode_timespec(&atime, &grant->atime);
+ ceph_decode_timespec(&ctime, &grant->ctime);
+ ceph_fill_file_time(inode, issued,
+ le32_to_cpu(grant->time_warp_seq),
+ &ctime, &mtime, &atime);
+ }
+
+ if (newcaps & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR)) {
+ /* file layout may have changed */
+ ci->i_layout = grant->layout;
+ /* size/truncate_seq? */
+ queue_trunc = ceph_fill_file_size(inode, issued,
+ le32_to_cpu(grant->truncate_seq),
+ le64_to_cpu(grant->truncate_size),
+ size);
+ /* max size increase? */
+ if (ci->i_auth_cap == cap && max_size != ci->i_max_size) {
+ dout("max_size %lld -> %llu\n",
+ ci->i_max_size, max_size);
+ ci->i_max_size = max_size;
+ if (max_size >= ci->i_wanted_max_size) {
+ ci->i_wanted_max_size = 0; /* reset */
+ ci->i_requested_max_size = 0;
+ }
+ wake = 1;
}
- wake = 1;
}
/* check cap bits */
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 233c6f9..f9e7399 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -585,14 +585,15 @@ static int fill_inode(struct inode *inode,
struct ceph_mds_reply_inode *info = iinfo->in;
struct ceph_inode_info *ci = ceph_inode(inode);
int i;
- int issued = 0, implemented;
+ int issued = 0, implemented, new_issued;
struct timespec mtime, atime, ctime;
u32 nsplits;
struct ceph_inode_frag *frag;
struct rb_node *rb_node;
struct ceph_buffer *xattr_blob = NULL;
int err = 0;
- int queue_trunc = 0;
+ bool queue_trunc = false;
+ bool new_version = false;
dout("fill_inode %p ino %llx.%llx v %llu had %llu\n",
inode, ceph_vinop(inode), le64_to_cpu(info->version),
@@ -623,19 +624,23 @@ static int fill_inode(struct inode *inode,
* 3 2 skip
* 3 3 update
*/
- if (le64_to_cpu(info->version) > 0 &&
- (ci->i_version & ~1) >= le64_to_cpu(info->version))
- goto no_change;
-
+ if (ci->i_version == 0 ||
+ ((info->cap.flags & CEPH_CAP_FLAG_AUTH) &&
+ le64_to_cpu(info->version) > (ci->i_version & ~1)))
+ new_version = true;
+
issued = __ceph_caps_issued(ci, &implemented);
issued |= implemented | __ceph_caps_dirty(ci);
+ new_issued = ~issued & le32_to_cpu(info->cap.caps);
/* update inode */
ci->i_version = le64_to_cpu(info->version);
inode->i_version++;
inode->i_rdev = le32_to_cpu(info->rdev);
+ inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
- if ((issued & CEPH_CAP_AUTH_EXCL) == 0) {
+ if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) &&
+ (issued & CEPH_CAP_AUTH_EXCL) == 0) {
inode->i_mode = le32_to_cpu(info->mode);
inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid));
inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid));
@@ -644,23 +649,35 @@ static int fill_inode(struct inode *inode,
from_kgid(&init_user_ns, inode->i_gid));
}
- if ((issued & CEPH_CAP_LINK_EXCL) == 0)
+ if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) &&
+ (issued & CEPH_CAP_LINK_EXCL) == 0)
set_nlink(inode, le32_to_cpu(info->nlink));
- /* be careful with mtime, atime, size */
- ceph_decode_timespec(&atime, &info->atime);
- ceph_decode_timespec(&mtime, &info->mtime);
- ceph_decode_timespec(&ctime, &info->ctime);
- queue_trunc = ceph_fill_file_size(inode, issued,
- le32_to_cpu(info->truncate_seq),
- le64_to_cpu(info->truncate_size),
- le64_to_cpu(info->size));
- ceph_fill_file_time(inode, issued,
- le32_to_cpu(info->time_warp_seq),
- &ctime, &mtime, &atime);
-
- ci->i_layout = info->layout;
- inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
+ if (new_version || (new_issued & CEPH_CAP_ANY_RD)) {
+ /* be careful with mtime, atime, size */
+ ceph_decode_timespec(&atime, &info->atime);
+ ceph_decode_timespec(&mtime, &info->mtime);
+ ceph_decode_timespec(&ctime, &info->ctime);
+ ceph_fill_file_time(inode, issued,
+ le32_to_cpu(info->time_warp_seq),
+ &ctime, &mtime, &atime);
+ }
+
+ if (new_version ||
+ (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) {
+ ci->i_layout = info->layout;
+ queue_trunc = ceph_fill_file_size(inode, issued,
+ le32_to_cpu(info->truncate_seq),
+ le64_to_cpu(info->truncate_size),
+ le64_to_cpu(info->size));
+ /* only update max_size on auth cap */
+ if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) &&
+ ci->i_max_size != le64_to_cpu(info->max_size)) {
+ dout("max_size %lld -> %llu\n", ci->i_max_size,
+ le64_to_cpu(info->max_size));
+ ci->i_max_size = le64_to_cpu(info->max_size);
+ }
+ }
/* xattrs */
/* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */
@@ -745,15 +762,6 @@ static int fill_inode(struct inode *inode,
dout(" marking %p complete (empty)\n", inode);
__ceph_dir_set_complete(ci, atomic_read(&ci->i_release_count));
}
-no_change:
- /* only update max_size on auth cap */
- if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) &&
- ci->i_max_size != le64_to_cpu(info->max_size)) {
- dout("max_size %lld -> %llu\n", ci->i_max_size,
- le64_to_cpu(info->max_size));
- ci->i_max_size = le64_to_cpu(info->max_size);
- }
-
spin_unlock(&ci->i_ceph_lock);
/* queue truncate if we saw i_size decrease */
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index 5f6db18..3c97d5e 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -625,6 +625,8 @@ int ceph_flags_to_mode(int flags);
CEPH_CAP_LINK_EXCL | \
CEPH_CAP_XATTR_EXCL | \
CEPH_CAP_FILE_EXCL)
+#define CEPH_CAP_ANY_FILE_RD (CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE | \
+ CEPH_CAP_FILE_SHARED)
#define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
CEPH_CAP_FILE_EXCL)
#define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
--
1.9.0
--
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