Some devices has small max_{hw,}discard_sectors, so that in
__blkdev_issue_discard(), one big size discard bio can be split
into multiple small size discard bios, result in heavy load in IO
scheduler and device, which can hang other sync IO for long time.
Now, f2fs is trying to control discard com
This patch adds to support discard submission error injection for testing
error handling of __submit_discard_cmd().
Signed-off-by: Chao Yu
---
fs/f2fs/f2fs.h| 1 +
fs/f2fs/segment.c | 8
fs/f2fs/super.c | 1 +
3 files changed, 10 insertions(+)
diff --git a/fs/f2fs/f2fs.h b/fs/f2f
From: Chao Yu
Some devices has small max_{hw,}discard_sectors, so that in
__blkdev_issue_discard(), one big size discard bio can be split
into multiple small size discard bios, result in heavy load in IO
scheduler and device, which can hang other sync IO for long time.
Now, f2fs is trying to con
