A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 03:27:44 -04:00
Code Issues Projects Releases Packages Wiki Activity

dm: send empty barriers to targets in dm_flush

Browse source 
Pass empty barrier flushes to the targets in dm_flush().

Signed-off-by: Mikulas Patocka <[email protected]>
Signed-off-by: Alasdair G Kergon <[email protected]>
This commit is contained in:
Mikulas Patocka 2009-06-22 10:12:21 +01:00 • committed by Alasdair G Kergon
commit 52b1fd5a27
1 changed files with 10 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

10
drivers/md/dm.c
View file

@ -164,6 +164,9 @@ struct mapped_device {
/* sysfs handle */
struct kobject kobj;
/* zero-length barrier that will be cloned and submitted to targets */
struct bio barrier_bio;
};
#define MIN_IOS 256
@ -1477,6 +1480,13 @@ static int dm_wait_for_completion(struct mapped_device *md, int interruptible)
static void dm_flush(struct mapped_device *md)
{
dm_wait_for_completion(md, TASK_UNINTERRUPTIBLE);
bio_init(&md->barrier_bio);
md->barrier_bio.bi_bdev = md->bdev;
md->barrier_bio.bi_rw = WRITE_BARRIER;
__split_and_process_bio(md, &md->barrier_bio);
dm_wait_for_completion(md, TASK_UNINTERRUPTIBLE);
}
static void process_barrier(struct mapped_device *md, struct bio *bio)