From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Thu, 5 Feb 2015 22:05:08 +0000 (-0500)
Subject: NFSv4.1: pnfs_send_layoutreturn should use GFP_NOFS
X-Git-Tag: v4.14-rc1~5864^2~31
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e4af440aaf390ac1d39b26ef6cf4a28bcb6a5979;p=platform%2Fkernel%2Flinux-rpi.git

NFSv4.1: pnfs_send_layoutreturn should use GFP_NOFS

In we want to be able to call pnfs_send_layoutreturn() from within the
writeback path, we really want it to use GFP_NOFS in order to prevent
recursion.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 703501d..a1d8620 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -948,7 +948,7 @@ pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, nfs4_stateid stateid,
 	struct nfs4_layoutreturn *lrp;
 	int status = 0;
 
-	lrp = kzalloc(sizeof(*lrp), GFP_KERNEL);
+	lrp = kzalloc(sizeof(*lrp), GFP_NOFS);
 	if (unlikely(lrp == NULL)) {
 		status = -ENOMEM;
 		spin_lock(&ino->i_lock);