ext4: Use return value from sb_issue_discard()

Use return value from sb_issue_discard() as return value in
ext4_issue_discard(). Since sb_issue_discard() may result in more
serious errors than just -EOPNOTSUPP it is worth to inform user of this
function about them to handle error cases properly.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 611c866..11c2eec 100644 (file)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2603,7 +2603,7 @@ int ext4_mb_release(struct super_block *sb)
        return 0;
 }
 
-static inline void ext4_issue_discard(struct super_block *sb,
+static inline int ext4_issue_discard(struct super_block *sb,
                ext4_group_t block_group, ext4_grpblk_t block, int count)
 {
        int ret;
@@ -2617,6 +2617,7 @@ static inline void ext4_issue_discard(struct super_block *sb,
                ext4_warning(sb, "discard not supported, disabling");
                clear_opt(EXT4_SB(sb)->s_mount_opt, DISCARD);
        }
+       return ret;
 }
 
 /*