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NFS: Don't revalidate attributes that are not being asked for 

If the user doesn't set STATX_UID/GID/MODE, then don't care if they are
known to be stale. Ditto if we're not being asked for the file size.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2021-03-24 13:55:09 -04:00
parent 4cdfeb648a
commit e8764a6f96
1 changed files with 9 additions and 4 deletions
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13
fs/nfs/inode.c
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@ -857,12 +857,17 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
/* Check whether the cached attributes are stale */
do_update |= force_sync || nfs_attribute_cache_expired(inode);
cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
do_update |= cache_validity &
(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL);
do_update |= cache_validity & NFS_INO_INVALID_CHANGE;
if (request_mask & STATX_ATIME)
do_update |= cache_validity & NFS_INO_INVALID_ATIME;
if (request_mask & (STATX_CTIME|STATX_MTIME))
do_update |= cache_validity & NFS_INO_REVAL_PAGECACHE;
if (request_mask & STATX_CTIME)
do_update |= cache_validity & NFS_INO_INVALID_CTIME;
if (request_mask & STATX_MTIME)
do_update |= cache_validity & NFS_INO_INVALID_MTIME;
if (request_mask & STATX_SIZE)
do_update |= cache_validity & NFS_INO_INVALID_SIZE;
if (request_mask & (STATX_UID | STATX_GID | STATX_MODE | STATX_NLINK))
do_update |= cache_validity & NFS_INO_INVALID_OTHER;
if (request_mask & STATX_BLOCKS)
do_update |= cache_validity & NFS_INO_INVALID_BLOCKS;
if (do_update) {