redonkable/alistair23-linux
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NFS: Allow applications to speed up readdir+statx() using AT_STATX_DONT_SYNC

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If the application uses the AT_STATX_DONT_SYNC flag after doing readdir(),
then we should still mark the parent inode as seeing a readdirplus hit.
That ensures that we continue to use readdirplus in the 'ls -l' type
of workflow to do fast lookups of the dentries.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2020-06-04 16:20:06 -04:00
parent 11ba468877
commit ac7cbb2211
1 changed files with 3 additions and 1 deletions
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4
fs/nfs/inode.c
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@ -794,8 +794,10 @@ int nfs_getattr(const struct path *path, struct kstat *stat,
trace_nfs_getattr_enter(inode);
if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync)
if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync) {
nfs_readdirplus_parent_cache_hit(path->dentry);
goto out_no_update;
}
/* Flush out writes to the server in order to update c/mtime. */
if ((request_mask & (STATX_CTIME|STATX_MTIME)) &&