Commit ac7cbb22 authored Jun 04, 2020 by Trond Myklebust

NFS: Allow applications to speed up readdir+statx() using AT_STATX_DONT_SYNC

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>

parent 11ba4688

fs/nfs/inode.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -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)) &&

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