[PATCH] md/raid1: clear bitmap when fullsync completes
We need to be careful differentiating between a resync of a complete array,
in which we can clear the bitmap, and a resync of a degraded array, in
which we cannot.
This patch cleans all that up.
Cc: Paul Clements <paul.clements@steeleye.com>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index ff1dbec..5f253ee 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1126,21 +1126,19 @@
* only be one in raid1 resync.
* We can find the current addess in mddev->curr_resync
*/
- if (!conf->fullsync) {
- if (mddev->curr_resync < max_sector)
- bitmap_end_sync(mddev->bitmap,
- mddev->curr_resync,
+ if (mddev->curr_resync < max_sector) /* aborted */
+ bitmap_end_sync(mddev->bitmap, mddev->curr_resync,
&sync_blocks, 1);
- bitmap_close_sync(mddev->bitmap);
- }
- if (mddev->curr_resync >= max_sector)
+ else /* completed sync */
conf->fullsync = 0;
+
+ bitmap_close_sync(mddev->bitmap);
close_sync(conf);
return 0;
}
- if (!conf->fullsync &&
- !bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks)) {
+ if (!bitmap_start_sync(mddev->bitmap, sector_nr, &sync_blocks, mddev->degraded) &&
+ !conf->fullsync) {
/* We can skip this block, and probably several more */
*skipped = 1;
return sync_blocks;
@@ -1243,15 +1241,15 @@
len = (max_sector - sector_nr) << 9;
if (len == 0)
break;
- if (!conf->fullsync) {
- if (sync_blocks == 0) {
- if (!bitmap_start_sync(mddev->bitmap,
- sector_nr, &sync_blocks))
- break;
- if (sync_blocks < (PAGE_SIZE>>9))
- BUG();
- if (len > (sync_blocks<<9)) len = sync_blocks<<9;
- }
+ if (sync_blocks == 0) {
+ if (!bitmap_start_sync(mddev->bitmap, sector_nr,
+ &sync_blocks, mddev->degraded) &&
+ !conf->fullsync)
+ break;
+ if (sync_blocks < (PAGE_SIZE>>9))
+ BUG();
+ if (len > (sync_blocks<<9))
+ len = sync_blocks<<9;
}
for (i=0 ; i < conf->raid_disks; i++) {
@@ -1264,7 +1262,8 @@
while (i > 0) {
i--;
bio = r1_bio->bios[i];
- if (bio->bi_end_io==NULL) continue;
+ if (bio->bi_end_io==NULL)
+ continue;
/* remove last page from this bio */
bio->bi_vcnt--;
bio->bi_size -= len;