diff options
| author | Peng Tao <bergwolf@gmail.com> | 2012-01-12 23:18:47 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-25 16:13:36 -0800 |
| commit | 7e0f9f47b49048c1a809a9bfff85002cb7fbf8e3 (patch) | |
| tree | 08b1405b75db24ee83e0579be613b5a42ecee0dd /fs | |
| parent | ae6481331e29dd7a055c70b7abaaef9e01c60ced (diff) | |
pnfsblock: don't spinlock when freeing block_dev
commit 93a3844ee0f843b05a1df4b52e1a19ff26b98d24 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>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/blocklayout/blocklayout.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 281ae95932c9..ce8129d8ddc7 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -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); } } |