From 93a3844ee0f843b05a1df4b52e1a19ff26b98d24 Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Thu, 12 Jan 2012 23:18:47 +0800 Subject: [PATCH] pnfsblock: don't spinlock when freeing block_dev 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. Cc: #3.1+ Signed-off-by: Peng Tao Signed-off-by: Benny Halevy Signed-off-by: Trond Myklebust --- fs/nfs/blocklayout/blocklayout.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 06fe0802118..6d39e9ab1e6 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -780,16 +780,13 @@ 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); } } -- 2.39.5