From: Trond Myklebust Date: Fri, 25 Mar 2011 18:15:11 +0000 (-0400) Subject: NFS: Fix a hang in the writeback path X-Git-Tag: v2.6.39-rc1~27^2~2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d65c520fb4abed970069d18c119cfe85624f46d;p=pandora-kernel.git NFS: Fix a hang in the writeback path Now that the inode scalability patches have been merged, it is no longer safe to call igrab() under the inode->i_lock. Now that we no longer call nfs_clear_request() until the nfs_page is being freed, we know that we are always holding a reference to the nfs_open_context, which again holds a reference to the path, and so the inode cannot be freed until the last nfs_page has been removed from the radix tree and freed. We can therefore skip the igrab()/iput() altogether. Signed-off-by: Trond Myklebust --- Reading git-diff-tree failed