From 220cca2a4f5867db595135e0450381032eb54902 Mon Sep 17 00:00:00 2001
From: Bob Peterson <rpeterso@redhat.com>
Date: Mon, 19 Mar 2012 15:25:50 -0400
Subject: [PATCH] GFS2: Change truncate page allocation to be GFP_NOFS
This patch changes the page allocation in gfs2_block_truncate_page
and two others to GFP_NOFS to avoid deadlock in low-memory conditions.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
---
fs/gfs2/bmap.c | 4 ++--
fs/gfs2/quota.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 14a704015970f..197c5c47e5776 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -60,7 +60,7 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
int release = 0;
if (!page || page->index) {
- page = grab_cache_page(inode->i_mapping, 0);
+ page = find_or_create_page(inode->i_mapping, 0, GFP_NOFS);
if (!page)
return -ENOMEM;
release = 1;
@@ -930,7 +930,7 @@ static int gfs2_block_truncate_page(struct address_space *mapping, loff_t from)
struct page *page;
int err;
- page = grab_cache_page(mapping, index);
+ page = find_or_create_page(mapping, index, GFP_NOFS);
if (!page)
return 0;
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index a45b21b039157..4856c66640bf1 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -681,7 +681,7 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
ptr = qp;
nbytes = sizeof(struct gfs2_quota);
get_a_page:
- page = grab_cache_page(mapping, index);
+ page = find_or_create_page(mapping, index, GFP_NOFS);
if (!page)
return -ENOMEM;