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authorNeilBrown <neilb@suse.de>2009-03-31 15:15:05 +1100
committerNeilBrown <neilb@suse.de>2009-03-31 15:15:05 +1100
commitcea9c22800773cecb1d41f4a6139f9eb6a95368b (patch)
treed070d22390b86768fefb8ba04c64d74993ed28e9 /drivers/md/md.h
parent7ec0547838976d088dfb9cb0adb073e6e8a15aa3 (diff)
downloadop-kernel-dev-cea9c22800773cecb1d41f4a6139f9eb6a95368b.zip
op-kernel-dev-cea9c22800773cecb1d41f4a6139f9eb6a95368b.tar.gz
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.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index d13e34f..e9b7f54 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);
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