This is a note to let you know that I've just added the patch titled
NFSD: nfsd_file_unhash can compute hashval from nf->nf_inode
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfsd-nfsd_file_unhash-can-compute-hashval-from-nf-nf.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ad7c80cfcf685ef79d08a2d584c036d0f6adbef7
Author: Chuck Lever <chuck.lever@xxxxxxxxxx>
Date: Fri Jul 8 14:25:50 2022 -0400
NFSD: nfsd_file_unhash can compute hashval from nf->nf_inode
[ Upstream commit 8755326399f471ec3b31e2ab8c5074c0d28a0fb5 ]
Remove an unnecessary usage of nf_hashval.
Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 6a01de8677959..d7c74b51eabf3 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -272,13 +272,17 @@ static void nfsd_file_lru_remove(struct nfsd_file *nf)
static void
nfsd_file_do_unhash(struct nfsd_file *nf)
{
- lockdep_assert_held(&nfsd_file_hashtbl[nf->nf_hashval].nfb_lock);
+ struct inode *inode = nf->nf_inode;
+ unsigned int hashval = (unsigned int)hash_long(inode->i_ino,
+ NFSD_FILE_HASH_BITS);
+
+ lockdep_assert_held(&nfsd_file_hashtbl[hashval].nfb_lock);
trace_nfsd_file_unhash(nf);
if (nfsd_file_check_write_error(nf))
nfsd_reset_write_verifier(net_generic(nf->nf_net, nfsd_net_id));
- --nfsd_file_hashtbl[nf->nf_hashval].nfb_count;
+ --nfsd_file_hashtbl[hashval].nfb_count;
hlist_del_rcu(&nf->nf_node);
atomic_long_dec(&nfsd_filecache_count);
}
