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authorNeilBrown <neilb@suse.de>2009-09-23 18:06:44 +1000
committerNeilBrown <neilb@suse.de>2009-09-23 18:06:44 +1000
commitee305acef5c7841dc25cc32e84bb94f744e1e9b9 (patch)
treef952a19fce593391e5cbd4a3bb4087d214a8ddc0 /drivers/md/bitmap.c
parenta9f326ebf22a0de776815240fb76dabe139397ea (diff)
md: remove sparse warnings about lock context.
There was a real error here on a failure path where we incorrectly call rcu_read_unlock. Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/bitmap.c')
-rw-r--r--drivers/md/bitmap.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 3319c2fec28e..6986b0059d23 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -108,6 +108,8 @@ static void bitmap_free_page(struct bitmap *bitmap, unsigned char *page)
* allocated while we're using it
*/
static int bitmap_checkpage(struct bitmap *bitmap, unsigned long page, int create)
+__releases(bitmap->lock)
+__acquires(bitmap->lock)
{
unsigned char *mappage;
@@ -325,7 +327,6 @@ static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
return 0;
bad_alignment:
- rcu_read_unlock();
return -EINVAL;
}
@@ -1207,6 +1208,8 @@ void bitmap_daemon_work(struct bitmap *bitmap)
static bitmap_counter_t *bitmap_get_counter(struct bitmap *bitmap,
sector_t offset, int *blocks,
int create)
+__releases(bitmap->lock)
+__acquires(bitmap->lock)
{
/* If 'create', we might release the lock and reclaim it.
* The lock must have been taken with interrupts enabled.