linux-kernel - [PATCH] cifs: fix fh_mutex locking in cifs_reopen

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Date:	Sat, 27 Jun 2009 07:04:55 -0400
From:	Jeff Layton <jlayton@...hat.com>
To:	linux-cifs-client@...ts.samba.org
Cc:	smfrench@...il.com, linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Subject: [PATCH] cifs: fix fh_mutex locking in cifs_reopen_file

Fixes a regression caused by commit a6ce4932fbdbcd8f8e8c6df76812014351c32892

When this lock was converted to a mutex, the locks were turned into
unlocks and vice-versa.

Signed-off-by: Jeff Layton <jlayton@...hat.com>
Cc: Stable Tree <stable@...nel.org>
---
 fs/cifs/file.c |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index ebdbe62..97ce4bf 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -493,9 +493,9 @@ static int cifs_reopen_file(struct file *file, bool can_flush)
 		return -EBADF;
 
 	xid = GetXid();
-	mutex_unlock(&pCifsFile->fh_mutex);
+	mutex_lock(&pCifsFile->fh_mutex);
 	if (!pCifsFile->invalidHandle) {
-		mutex_lock(&pCifsFile->fh_mutex);
+		mutex_unlock(&pCifsFile->fh_mutex);
 		rc = 0;
 		FreeXid(xid);
 		return rc;
@@ -527,7 +527,7 @@ static int cifs_reopen_file(struct file *file, bool can_flush)
 	if (full_path == NULL) {
 		rc = -ENOMEM;
 reopen_error_exit:
-		mutex_lock(&pCifsFile->fh_mutex);
+		mutex_unlock(&pCifsFile->fh_mutex);
 		FreeXid(xid);
 		return rc;
 	}
@@ -569,14 +569,14 @@ reopen_error_exit:
 			 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
 				CIFS_MOUNT_MAP_SPECIAL_CHR);
 	if (rc) {
-		mutex_lock(&pCifsFile->fh_mutex);
+		mutex_unlock(&pCifsFile->fh_mutex);
 		cFYI(1, ("cifs_open returned 0x%x", rc));
 		cFYI(1, ("oplock: %d", oplock));
 	} else {
 reopen_success:
 		pCifsFile->netfid = netfid;
 		pCifsFile->invalidHandle = false;
-		mutex_lock(&pCifsFile->fh_mutex);
+		mutex_unlock(&pCifsFile->fh_mutex);
 		pCifsInode = CIFS_I(inode);
 		if (pCifsInode) {
 			if (can_flush) {
-- 
1.6.0.6

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