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[1/2] nfsd4: remember to put RW access on stateid destruction

Message ID 1310772015-29056-1-git-send-email-bfields@redhat.com (mailing list archive)
State New, archived
Headers show

Commit Message

Bruce Fields July 15, 2011, 11:20 p.m. UTC 
Without this, for example,

	open read
	open read+write
	close

will result in a struct file leak.

Regression from 7d94784293096c0a46897acdb83be5abd9278ece "nfsd4: fix
downgrade/lock logic".

Cc: stable@kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
---
 fs/nfsd/nfs4state.c |   17 ++++++-----------
 1 files changed, 6 insertions(+), 11 deletions(-)
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Patch

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 12244ce..5e8806a 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -385,14 +385,6 @@  static int nfs4_access_to_omode(u32 access)
 	BUG();
 }
 
-static int nfs4_access_bmap_to_omode(struct nfs4_stateid *stp)
-{
-	unsigned int access;
-
-	set_access(&access, stp->st_access_bmap);
-	return nfs4_access_to_omode(access);
-}
-
 static void unhash_generic_stateid(struct nfs4_stateid *stp)
 {
 	list_del(&stp->st_hash);
@@ -402,11 +394,14 @@  static void unhash_generic_stateid(struct nfs4_stateid *stp)
 
 static void free_generic_stateid(struct nfs4_stateid *stp)
 {
-	int oflag;
+	int i;
 
 	if (stp->st_access_bmap) {
-		oflag = nfs4_access_bmap_to_omode(stp);
-		nfs4_file_put_access(stp->st_file, oflag);
+		for (i = 1; i < 4; i++) {
+			if (test_bit(i, &stp->st_access_bmap))
+				nfs4_file_put_access(stp->st_file,
+						nfs4_access_to_omode(i));
+		}
 	}
 	put_nfs4_file(stp->st_file);
 	kmem_cache_free(stateid_slab, stp);