diff options
| author | Xiao Ni <xni@redhat.com> | 2021-02-04 15:50:47 +0800 |
|---|---|---|
| committer | Song Liu <songliubraving@fb.com> | 2021-03-24 16:29:07 -0700 |
| commit | 254c271da0712ea8914f187588e0f81f7678ee2f (patch) | |
| tree | 36beb2442114ce09334a1c377b71f0399df30456 /drivers/md/raid10.h | |
| parent | d30588b2731fb01e1616cf16c3fe79a1443e29aa (diff) | |
md/raid10: improve discard request for far layout
For far layout, the discard region is not continuous on disks. So it needs
far copies r10bio to cover all regions. It needs a way to know all r10bios
have finish or not. Similar with raid10_sync_request, only the first r10bio
master_bio records the discard bio. Other r10bios master_bio record the
first r10bio. The first r10bio can finish after other r10bios finish and
then return the discard bio.
Tested-by: Adrian Huang <ahuang12@lenovo.com>
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Diffstat (limited to 'drivers/md/raid10.h')
| -rw-r--r-- | drivers/md/raid10.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h index 79cd2b7d3128..1461fd55311b 100644 --- a/drivers/md/raid10.h +++ b/drivers/md/raid10.h @@ -179,5 +179,6 @@ enum r10bio_state { R10BIO_Previous, /* failfast devices did receive failfast requests. */ R10BIO_FailFast, + R10BIO_Discard, }; #endif |