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md/raid5: call bio_endio() directly rather than queueing for later.

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We currently gather bios that need to be returned into a bio_list
and call bio_endio() on them all together.
The original reason for this was to avoid making the calls while
holding a spinlock.
Locking has changed a lot since then, and that reason is no longer
valid.

So discard return_io() and various return_bi lists, and just call
bio_endio() directly as needed.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
This commit is contained in:
NeilBrown
2017-03-15 14:05:12 +11:00
committed by Shaohua Li
parent 16d997b78b
commit bd83d0a28c
4 changed files with 16 additions and 38 deletions
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drivers/md/raid5.h
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@@ -278,7 +278,6 @@ struct stripe_head_state {
int dec_preread_active;
unsigned long ops_request;
struct bio_list return_bi;
struct md_rdev *blocked_rdev;
int handle_bad_blocks;
int log_failed;