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rbd: rename __rbd_update_snaps to __rbd_refresh_header 

This function rereads the entire header and handles any changes in
it, not just changes in snapshots.

Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com>
Reviewed-by: Alex Elder <elder@dreamhost.com>
Reviewed-by: Yehuda Sadeh <yehuda@hq.newdream.net>
This commit is contained in:
Josh Durgin 2011-12-05 10:43:42 -08:00 коммит произвёл Alex Elder
Родитель 3591538fb2
Коммит 263c6ca007
1 изменённых файлов: 6 добавлений и 6 удалений
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12
drivers/block/rbd.c
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@ -240,7 +240,7 @@ static void rbd_put_dev(struct rbd_device *rbd_dev)
put_device(&rbd_dev->dev);
}
static int __rbd_update_snaps(struct rbd_device *rbd_dev);
static int __rbd_refresh_header(struct rbd_device *rbd_dev);
static int rbd_open(struct block_device *bdev, fmode_t mode)
{
@ -1222,7 +1222,7 @@ static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
dout("rbd_watch_cb %s notify_id=%lld opcode=%d\n", dev->obj_md_name,
notify_id, (int)opcode);
mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
rc = __rbd_update_snaps(dev);
rc = __rbd_refresh_header(dev);
mutex_unlock(&ctl_mutex);
if (rc)
pr_warning(RBD_DRV_NAME "%d got notification but failed to "
@ -1689,7 +1689,7 @@ static void __rbd_remove_all_snaps(struct rbd_device *rbd_dev)
/*
* only read the first part of the ondisk header, without the snaps info
*/
static int __rbd_update_snaps(struct rbd_device *rbd_dev)
static int __rbd_refresh_header(struct rbd_device *rbd_dev)
{
int ret;
struct rbd_image_header h;
@ -1876,7 +1876,7 @@ static ssize_t rbd_image_refresh(struct device *dev,
mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
rc = __rbd_update_snaps(rbd_dev);
rc = __rbd_refresh_header(rbd_dev);
if (rc < 0)
ret = rc;
@ -2159,7 +2159,7 @@ static int rbd_init_watch_dev(struct rbd_device *rbd_dev)
rbd_dev->header.obj_version);
if (ret == -ERANGE) {
mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
rc = __rbd_update_snaps(rbd_dev);
rc = __rbd_refresh_header(rbd_dev);
mutex_unlock(&ctl_mutex);
if (rc < 0)
return rc;
@ -2544,7 +2544,7 @@ static ssize_t rbd_snap_add(struct device *dev,
if (ret < 0)
goto err_unlock;
ret = __rbd_update_snaps(rbd_dev);
ret = __rbd_refresh_header(rbd_dev);
if (ret < 0)
goto err_unlock;