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btrfs: raid56: Use raid_write_end_io for scrub 

No need to create additional end_io function for scrub, it increased
code size and introduced some un-unified lines, as:
raid_write_parity_end_io():
        int err = bio->bi_error;
        if (bio->bi_error)
raid_write_end_io():
        int err = bio->bi_error;
        if (err)

This patch combines them.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Zhao Lei 2016-01-12 17:52:13 +08:00 committed by Chris Mason
parent 748f4ef4c6
commit a6111d11b8
1 changed files with 5 additions and 27 deletions
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32
fs/btrfs/raid56.c
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@ -901,6 +901,7 @@ static void raid_write_end_io(struct bio *bio)
{
struct btrfs_raid_bio *rbio = bio->bi_private;
int err = bio->bi_error;
int max_errors;
if (err)
fail_bio_stripe(rbio, bio);
@ -913,7 +914,9 @@ static void raid_write_end_io(struct bio *bio)
err = 0;
/* OK, we have read all the stripes we need to. */
if (atomic_read(&rbio->error) > rbio->bbio->max_errors)
max_errors = (rbio->operation == BTRFS_RBIO_PARITY_SCRUB) ?
0 : rbio->bbio->max_errors;
if (atomic_read(&rbio->error) > max_errors)
err = -EIO;
rbio_orig_end_io(rbio, err);
@ -2277,31 +2280,6 @@ static int alloc_rbio_essential_pages(struct btrfs_raid_bio *rbio)
return 0;
}
/*
* end io function used by finish_rmw. When we finally
* get here, we've written a full stripe
*/
static void raid_write_parity_end_io(struct bio *bio)
{
struct btrfs_raid_bio *rbio = bio->bi_private;
int err = bio->bi_error;
if (bio->bi_error)
fail_bio_stripe(rbio, bio);
bio_put(bio);
if (!atomic_dec_and_test(&rbio->stripes_pending))
return;
err = 0;
if (atomic_read(&rbio->error))
err = -EIO;
rbio_orig_end_io(rbio, err);
}
static noinline void finish_parity_scrub(struct btrfs_raid_bio *rbio,
int need_check)
{
@ -2454,7 +2432,7 @@ submit_write:
break;
bio->bi_private = rbio;
bio->bi_end_io = raid_write_parity_end_io;
bio->bi_end_io = raid_write_end_io;
submit_bio(WRITE, bio);
}
return;