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| author | Shaohua Li <shli@fb.com> | 2017-02-13 16:21:49 -0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-02-13 19:24:16 -0800 |
| commit | 26483819f89c5cf9d27620d70c95afeeeb9bece5 (patch) | |
| tree | c6bc82084038c13c7c694062b4092a1eb8485abe /drivers/md/multipath.c | |
| parent | e33fbb9cc73d6502e69eaf1c178e0c39059763ea (diff) | |
| download | linux-26483819f89c5cf9d27620d70c95afeeeb9bece5.tar.gz linux-26483819f89c5cf9d27620d70c95afeeeb9bece5.tar.bz2 linux-26483819f89c5cf9d27620d70c95afeeeb9bece5.zip | |
md: disable WRITE SAME if it fails in underlayer disks
This makes md do the same thing as dm for write same IO failure. Please
see 7eee4ae(dm: disable WRITE SAME if it fails) for details why we need
this.
We did a little bit different than dm. Instead of disabling writesame in
the first IO error, we disable it till next writesame IO coming after
the first IO error. This way we don't need to clone a bio.
Also reported here: https://bugzilla.kernel.org/show_bug.cgi?id=118581
Suggested-by: NeilBrown <neilb@suse.com>
Acked-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers/md/multipath.c')
| -rw-r--r-- | drivers/md/multipath.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index aa8c4e5c1ee2..065fe2823285 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -138,6 +138,7 @@ static void multipath_make_request(struct mddev *mddev, struct bio * bio) mp_bh->bio.bi_opf |= REQ_FAILFAST_TRANSPORT; mp_bh->bio.bi_end_io = multipath_end_request; mp_bh->bio.bi_private = mp_bh; + mddev_check_writesame(mddev, &mp_bh->bio); generic_make_request(&mp_bh->bio); return; } |