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pnfsblock: don't spinlock when freeing block_dev

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commit 93a3844ee0 upstream.

bl_free_block_dev() may sleep. We can not call it with spinlock held.
Besides, there is no need to take bm_lock as we are last user freeing bm_devlist.

Signed-off-by: Peng Tao <peng_tao@emc.com>
Signed-off-by: Benny Halevy <bhalevy@tonian.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Peng Tao
2012-01-12 23:18:47 +08:00
committed by Greg Kroah-Hartman
parent ae6481331e
commit 7e0f9f47b4
1 changed files with 4 additions and 7 deletions
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11
fs/nfs/blocklayout/blocklayout.c
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@@ -779,16 +779,13 @@ bl_cleanup_layoutcommit(struct nfs4_layoutcommit_data *lcdata)
static void free_blk_mountid(struct block_mount_id *mid)
{
if (mid) {
struct pnfs_block_dev *dev;
spin_lock(&mid->bm_lock);
while (!list_empty(&mid->bm_devlist)) {
dev = list_first_entry(&mid->bm_devlist,
struct pnfs_block_dev,
bm_node);
struct pnfs_block_dev *dev, *tmp;
/* No need to take bm_lock as we are last user freeing bm_devlist */
list_for_each_entry_safe(dev, tmp, &mid->bm_devlist, bm_node) {
list_del(&dev->bm_node);
bl_free_block_dev(dev);
}
spin_unlock(&mid->bm_lock);
kfree(mid);
}
}