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| author | NeilBrown <neilb@suse.de> | 2009-03-31 15:15:05 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2009-03-31 15:15:05 +1100 |
| commit | cea9c22800773cecb1d41f4a6139f9eb6a95368b (patch) | |
| tree | d070d22390b86768fefb8ba04c64d74993ed28e9 /drivers/md/md.h | |
| parent | 7ec0547838976d088dfb9cb0adb073e6e8a15aa3 (diff) | |
| download | lwn-cea9c22800773cecb1d41f4a6139f9eb6a95368b.tar.gz lwn-cea9c22800773cecb1d41f4a6139f9eb6a95368b.zip | |
md: add explicit method to signal the end of a reshape.
Currently raid5 (the only module that supports restriping)
notices that the reshape has finished be sync_request being
given a large value, and handles any cleanup them.
This patch changes it so md_check_recovery calls into an
explicit finish_reshape method as well.
The clean-up from sync_request can do things that need to be
done promptly, typically things local to the raid5_conf_t
structure.
The "finish_reshape" method is called under the mddev_lock
so it can do things involving reconfiguring the device.
This allows us to get rid of md_set_array_sectors_locked, which
would have caused a deadlock if you tried to stop and array
while a reshape was happening.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/md.h')
| -rw-r--r-- | drivers/md/md.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h index d13e34f842e2..e9b7f54c24d6 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -317,6 +317,7 @@ struct mdk_personality sector_t (*size) (mddev_t *mddev, sector_t sectors, int raid_disks); int (*check_reshape) (mddev_t *mddev); int (*start_reshape) (mddev_t *mddev); + void (*finish_reshape) (mddev_t *mddev); int (*reconfig) (mddev_t *mddev, int layout, int chunk_size); /* quiesce moves between quiescence states * 0 - fully active @@ -433,4 +434,3 @@ extern void md_new_event(mddev_t *mddev); extern int md_allow_write(mddev_t *mddev); extern void md_wait_for_blocked_rdev(mdk_rdev_t *rdev, mddev_t *mddev); extern void md_set_array_sectors(mddev_t *mddev, sector_t array_sectors); -extern void md_set_array_sectors_lock(mddev_t *mddev, sector_t array_sectors); |