OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ext4: do not send discards as barriers 

ext4 already uses synchronous discards, no need to add I/O barriers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Christoph Hellwig 2010-08-18 05:29:18 -04:00 committed by Jens Axboe
parent 9c35575bbe
commit 61002f7db3
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/ext4/mballoc.c
View File

@ -2567,7 +2567,7 @@ static inline void ext4_issue_discard(struct super_block *sb,
trace_ext4_discard_blocks(sb, trace_ext4_discard_blocks(sb,
(unsigned long long) discard_block, count); (unsigned long long) discard_block, count);
ret = sb_issue_discard(sb, discard_block, count, GFP_NOFS, ret = sb_issue_discard(sb, discard_block, count, GFP_NOFS,
BLKDEV_IFL_WAIT | BLKDEV_IFL_BARRIER); BLKDEV_IFL_WAIT);
if (ret == EOPNOTSUPP) { if (ret == EOPNOTSUPP) {
ext4_warning(sb, "discard not supported, disabling"); ext4_warning(sb, "discard not supported, disabling");
clear_opt(EXT4_SB(sb)->s_mount_opt, DISCARD); clear_opt(EXT4_SB(sb)->s_mount_opt, DISCARD);