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| author | NeilBrown <neilb@suse.de> | 2010-06-01 19:37:29 +1000 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2010-07-26 12:53:08 +1000 |
| commit | 2ac8740151b082f045e58010eb92560c3a23a0e9 (patch) | |
| tree | 39bff686e28f033339c6d1cf47042b6dc1586c2f /drivers/md/raid5.h | |
| parent | 11d8a6e3719519fbc0e2c9d61b6fa931b84bf813 (diff) | |
| download | linux-2ac8740151b082f045e58010eb92560c3a23a0e9.tar.bz2 | |
md/raid5: add simple plugging infrastructure.
md/raid5 uses the plugging infrastructure provided by the block layer
and 'struct request_queue'. However when we plug raid5 under dm there
is no request queue so we cannot use that.
So create a similar infrastructure that is much lighter weight and use
it for raid5.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/raid5.h')
| -rw-r--r-- | drivers/md/raid5.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index d6470dec667a..6acd458f239d 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -398,6 +398,9 @@ struct raid5_private_data { * (fresh device added). * Cleared when a sync completes. */ + + struct plug_handle plug; + /* per cpu variables */ struct raid5_percpu { struct page *spare_page; /* Used when checking P/Q in raid6 */ |