fuse: get rid of ff->readdir.lock

The same protection is provided by file->f_pos_lock.

Note, this relies on the fact that file->f_mode has FMODE_ATOMIC_POS.
This flag is cleared by stream_open(), which would prevent locking of
f_pos_lock.

Prior to commit 7de64d521bf9 ("fuse: break up fuse_open_common()")
FOPEN_STREAM on a directory would cause stream_open() to be called.
After this commit this is not done anymore, so f_pos_lock will always
be locked.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

1 files changed, 0 insertions, 6 deletions

diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 0f3521449bb4..3658a70ae414 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -243,12 +243,6 @@ struct fuse_file {
 
 	/* Readdir related */
 	struct {
-		/*
-		 * Protects below fields against (crazy) parallel readdir on
-		 * same open file.  Uncontended in the normal case.
-		 */
-		struct mutex lock;
-
 		/* Dir stream position */
 		loff_t pos;