release-discard-bio-after-sending-discard-commands

   1 ext4: release discard bio after sending discard commands
   2
   3 From: Daeho Jeong <daeho.jeong@samsung.com>
   4
   5 We've changed the discard command handling into parallel manner.
   6 But, in this change, I forgot decreasing the usage count of the bio
   7 which was used to send discard request. I'm sorry about that.
   8
   9 Fixes: a015434480dc ("ext4: send parallel discards on commit completions")
  10 Signed-off-by: Daeho Jeong <daeho.jeong@samsung.com>
  11 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
  12 Reviewed-by: Jan Kara <jack@suse.cz>
  13 ---
  14  fs/ext4/mballoc.c | 4 +++-
  15  1 file changed, 3 insertions(+), 1 deletion(-)
  16
  17 diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
  18 index ab70b69e644c..88317b0cf7b8 100644
  19 --- a/fs/ext4/mballoc.c
  20 +++ b/fs/ext4/mballoc.c
  21 @@ -2892,8 +2892,10 @@ void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid)
  22                                 break;
  23                 }
  24
  25 -               if (discard_bio)
  26 +               if (discard_bio) {
  27                         submit_bio_wait(discard_bio);
  28 +                       bio_put(discard_bio);
  29 +               }
  30         }
  31
  32         list_for_each_entry_safe(entry, tmp, &freed_data_list, efd_list)
  33 --
  34 2.13.0
  35
  36