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[Cluster-devel] [GFS2 PATCH] 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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