Don't mark attributes as invalid just because they have changed. Instead,
for the purposes of adjusting the attribute cache timeout, keep a
separate variable that tracks whether or not a change occurred.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/inode.c | 34 +++++++++++++++-------------------
1 file changed, 15 insertions(+), 19 deletions(-)
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 2b7edd011d86..f35c5eb09cc9 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1788,6 +1788,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
unsigned long save_cache_validity;
bool have_writers = nfs_file_has_buffered_writers(nfsi);
bool cache_revalidated = true;
+ bool attr_changed = false;
dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n",
__func__, inode->i_sb->s_id, inode->i_ino,
@@ -1848,8 +1849,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
inode->i_sb->s_id, inode->i_ino);
/* Could it be a race with writeback? */
if (!have_writers) {
- invalid |= NFS_INO_INVALID_CHANGE
- | NFS_INO_INVALID_DATA
+ invalid |= NFS_INO_INVALID_DATA
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
/* Force revalidate of all attributes */
@@ -1861,6 +1861,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
nfs_force_lookup_revalidate(inode);
}
inode_set_iversion_raw(inode, fattr->change_attr);
+ attr_changed = true;
}
} else {
nfsi->cache_validity |= save_cache_validity &
@@ -1899,6 +1900,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
i_size_write(inode, new_isize);
if (!have_writers)
invalid |= NFS_INO_INVALID_DATA;
+ attr_changed = true;
}
dprintk("NFS: isize change on server for file %s/%ld "
"(%Ld to %Ld)\n",
@@ -1931,14 +1933,12 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
newmode |= fattr->mode & S_IALLUGO;
inode->i_mode = newmode;
invalid |= NFS_INO_INVALID_ACCESS
- | NFS_INO_INVALID_ACL
- | NFS_INO_INVALID_OTHER;
+ | NFS_INO_INVALID_ACL;
+ attr_changed = true;
}
} else if (server->caps & NFS_CAP_MODE) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ACCESS
- | NFS_INO_INVALID_ACL
- | NFS_INO_INVALID_OTHER
+ (NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}
@@ -1946,15 +1946,13 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (fattr->valid & NFS_ATTR_FATTR_OWNER) {
if (!uid_eq(inode->i_uid, fattr->uid)) {
invalid |= NFS_INO_INVALID_ACCESS
- | NFS_INO_INVALID_ACL
- | NFS_INO_INVALID_OTHER;
+ | NFS_INO_INVALID_ACL;
inode->i_uid = fattr->uid;
+ attr_changed = true;
}
} else if (server->caps & NFS_CAP_OWNER) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ACCESS
- | NFS_INO_INVALID_ACL
- | NFS_INO_INVALID_OTHER
+ (NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}
@@ -1962,25 +1960,23 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (fattr->valid & NFS_ATTR_FATTR_GROUP) {
if (!gid_eq(inode->i_gid, fattr->gid)) {
invalid |= NFS_INO_INVALID_ACCESS
- | NFS_INO_INVALID_ACL
- | NFS_INO_INVALID_OTHER;
+ | NFS_INO_INVALID_ACL;
inode->i_gid = fattr->gid;
+ attr_changed = true;
}
} else if (server->caps & NFS_CAP_OWNER_GROUP) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ACCESS
- | NFS_INO_INVALID_ACL
- | NFS_INO_INVALID_OTHER
+ (NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
if (inode->i_nlink != fattr->nlink) {
- invalid |= NFS_INO_INVALID_OTHER;
if (S_ISDIR(inode->i_mode))
invalid |= NFS_INO_INVALID_DATA;
set_nlink(inode, fattr->nlink);
+ attr_changed = true;
}
} else if (server->caps & NFS_CAP_NLINK) {
nfsi->cache_validity |= save_cache_validity &
@@ -2000,7 +1996,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
cache_revalidated = false;
/* Update attrtimeo value if we're out of the unstable period */
- if (invalid & NFS_INO_INVALID_ATTR) {
+ if (attr_changed) {
invalid &= ~NFS_INO_INVALID_ATTR;
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
--
2.17.1
--
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