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Go Back   Linux Archive > Redhat > Cluster Development

 
 
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Old 03-19-2012, 06:25 PM
Bob Peterson
 
Default GFS2: Change truncate page allocation to be GFP_NOFS

Hi,

This patch changes the page allocation in gfs2_block_truncate_page
and two others to GFP_NOFS to avoid deadlock in low-memory conditions.

Regards,

Bob Peterson
Red Hat File Systems

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
--
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 14a7040..197c5c4 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 a45b21b..4856c66 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;
 

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