fs/buffer: drop useless return value of submit_bh

submit_bh always returns 0. This patch drops the useless return value of
submit_bh from __sync_dirty_buffer(). Once all of submit_bh callers are
cleaned up, we can make it's return type as void.

Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/a98a6ddfac68f73d684c2724952e825bc1f4d238.1660788334.git.ritesh.list@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/fs/buffer.c b/fs/buffer.c
index 55e762a..c21b72c 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2801,8 +2801,6 @@ EXPORT_SYMBOL(write_dirty_buffer);
  */
 int __sync_dirty_buffer(struct buffer_head *bh, blk_opf_t op_flags)
 {
-       int ret = 0;
-
        WARN_ON(atomic_read(&bh->b_count) < 1);
        lock_buffer(bh);
        if (test_clear_buffer_dirty(bh)) {
@@ -2817,14 +2815,14 @@ int __sync_dirty_buffer(struct buffer_head *bh, blk_opf_t op_flags)
 
                get_bh(bh);
                bh->b_end_io = end_buffer_write_sync;
-               ret = submit_bh(REQ_OP_WRITE | op_flags, bh);
+               submit_bh(REQ_OP_WRITE | op_flags, bh);
                wait_on_buffer(bh);
-               if (!ret && !buffer_uptodate(bh))
-                       ret = -EIO;
+               if (!buffer_uptodate(bh))
+                       return -EIO;
        } else {
                unlock_buffer(bh);
        }
-       return ret;
+       return 0;
 }
 EXPORT_SYMBOL(__sync_dirty_buffer);