diff mbox series

NFSv4: Always ask for type with READDIR

Message ID ebc91231748a42cd72ee4e9d8f82ea0d42153b34.1693424222.git.bcodding@redhat.com (mailing list archive)
State New, archived
Headers show
Series NFSv4: Always ask for type with READDIR | expand

Commit Message

Benjamin Coddington Aug. 30, 2023, 7:38 p.m. UTC
Again we have claimed regressions for walking a directory tree, this time
with the "find" utility which always tries to optimize away asking for any
attributes until it has a complete list of entries.  This behavior makes
the readdir plus heuristic do the wrong thing, which causes a storm of
GETATTRs to determine each entry's type in order to continue the walk.

For v4 add the type attribute to each READDIR request to include it no
matter the heuristic.  This allows a simple `find` command to proceed
quickly through a directory tree.

Suggested-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
---
 fs/nfs/nfs4xdr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index deec76cf5afe..3c583e055689 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -1602,7 +1602,7 @@  static void encode_read(struct xdr_stream *xdr, const struct nfs_pgio_args *args
 static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req, struct compound_hdr *hdr)
 {
 	uint32_t attrs[3] = {
-		FATTR4_WORD0_RDATTR_ERROR,
+		FATTR4_WORD0_TYPE|FATTR4_WORD0_RDATTR_ERROR,
 		FATTR4_WORD1_MOUNTED_ON_FILEID,
 	};
 	uint32_t dircount = readdir->count;