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authorNeilBrown <neilb@suse.de>2011-01-14 09:14:34 +1100
committerNeilBrown <neilb@suse.de>2011-01-14 09:14:34 +1100
commit75d3da43cb74d2e5fb87816dbfecb839cd97c7f4 (patch)
tree27074aceb801ada315329591f32c938b36150ed9 /drivers/md
parenta6ff7e089c7fca813c956ccbed824087e89a3a49 (diff)
downloadop-kernel-dev-75d3da43cb74d2e5fb87816dbfecb839cd97c7f4.zip
op-kernel-dev-75d3da43cb74d2e5fb87816dbfecb839cd97c7f4.tar.gz
md: Don't let implementation detail of curr_resync leak out through sysfs.
mddev->curr_resync has artificial values of '1' and '2' which are used by the code which ensures only one resync is happening at a time on any given device. These values are internal and should never be exposed to user-space (except when translated appropriately as in the 'pending' status in /proc/mdstat). Unfortunately they are as ->curr_resync is assigned to ->curr_resync_completed and that value is directly visible through sysfs. So change the assignments to ->curr_resync_completed to get the same valued from elsewhere in a form that doesn't have the magic '1' or '2' values. Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/bitmap.c2
-rw-r--r--drivers/md/md.c5
-rw-r--r--drivers/md/raid5.c4
3 files changed, 5 insertions, 6 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 6cf5871..9a35320 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1546,7 +1546,7 @@ void bitmap_cond_end_sync(struct bitmap *bitmap, sector_t sector)
wait_event(bitmap->mddev->recovery_wait,
atomic_read(&bitmap->mddev->recovery_active) == 0);
- bitmap->mddev->curr_resync_completed = bitmap->mddev->curr_resync;
+ bitmap->mddev->curr_resync_completed = sector;
set_bit(MD_CHANGE_CLEAN, &bitmap->mddev->flags);
sector &= ~((1ULL << CHUNK_BLOCK_SHIFT(bitmap)) - 1);
s = 0;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index b98a85f..42b1d9e 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6824,7 +6824,7 @@ void md_do_sync(mddev_t *mddev)
desc, mdname(mddev));
mddev->curr_resync = j;
}
- mddev->curr_resync_completed = mddev->curr_resync;
+ mddev->curr_resync_completed = j;
while (j < max_sectors) {
sector_t sectors;
@@ -6842,8 +6842,7 @@ void md_do_sync(mddev_t *mddev)
md_unplug(mddev);
wait_event(mddev->recovery_wait,
atomic_read(&mddev->recovery_active) == 0);
- mddev->curr_resync_completed =
- mddev->curr_resync;
+ mddev->curr_resync_completed = j;
set_bit(MD_CHANGE_CLEAN, &mddev->flags);
sysfs_notify(&mddev->kobj, NULL, "sync_completed");
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 9212c07..d223a6c0 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -4236,7 +4236,7 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped
wait_event(conf->wait_for_overlap,
atomic_read(&conf->reshape_stripes)==0);
mddev->reshape_position = conf->reshape_progress;
- mddev->curr_resync_completed = mddev->curr_resync;
+ mddev->curr_resync_completed = sector_nr;
conf->reshape_checkpoint = jiffies;
set_bit(MD_CHANGE_DEVS, &mddev->flags);
md_wakeup_thread(mddev->thread);
@@ -4337,7 +4337,7 @@ static sector_t reshape_request(mddev_t *mddev, sector_t sector_nr, int *skipped
wait_event(conf->wait_for_overlap,
atomic_read(&conf->reshape_stripes) == 0);
mddev->reshape_position = conf->reshape_progress;
- mddev->curr_resync_completed = mddev->curr_resync + reshape_sectors;
+ mddev->curr_resync_completed = sector_nr;
conf->reshape_checkpoint = jiffies;
set_bit(MD_CHANGE_DEVS, &mddev->flags);
md_wakeup_thread(mddev->thread);
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