Reviewed-by: Josh Durgin <[email protected]>
On 09/07/2012 07:50 AM, Alex Elder wrote:
Move the calls to get the header semaphore out of rbd_header_set_snap() and into its caller. Signed-off-by: Alex Elder <[email protected]> --- drivers/block/rbd.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 634a16c..214c937 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -647,8 +647,6 @@ static int rbd_header_set_snap(struct rbd_device *rbd_dev, char *snap_name) { int ret; - down_write(&rbd_dev->header_rwsem); - if (!memcmp(snap_name, RBD_SNAP_HEAD_NAME, sizeof (RBD_SNAP_HEAD_NAME))) { rbd_dev->mapping.snap_id = CEPH_NOSNAP; @@ -666,7 +664,6 @@ static int rbd_header_set_snap(struct rbd_device *rbd_dev, char *snap_name) ret = 0; done: - up_write(&rbd_dev->header_rwsem); return ret; } @@ -2608,7 +2605,9 @@ static ssize_t rbd_add(struct bus_type *bus, if (rc) goto err_out_bus; + down_write(&rbd_dev->header_rwsem); rc = rbd_header_set_snap(rbd_dev, snap_name); + up_write(&rbd_dev->header_rwsem); if (rc) goto err_out_bus;
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