From: Daeho Jeong <daeho.jeong@samsung.com>
Date: Sat, 5 Aug 2017 17:11:57 +0000 (-0400)
Subject: ext4: release discard bio after sending discard commands
X-Git-Tag: v4.13-rc4~2^2~13
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e45105772db41c5318b2a7ec1c420183183414e3;p=thirdparty%2Fkernel%2Flinux.git

ext4: release discard bio after sending discard commands

We've changed the discard command handling into parallel manner.
But, in this change, I forgot decreasing the usage count of the bio
which was used to send discard request. I'm sorry about that.

Fixes: a015434480dc ("ext4: send parallel discards on commit completions")
Signed-off-by: Daeho Jeong <daeho.jeong@samsung.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
---

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 581e357e8406c..8779893d74e5c 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2892,8 +2892,10 @@ void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid)
 				break;
 		}
 
-		if (discard_bio)
+		if (discard_bio) {
 			submit_bio_wait(discard_bio);
+			bio_put(discard_bio);
+		}
 	}
 
 	list_for_each_entry_safe(entry, tmp, &freed_data_list, efd_list)