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[PATCH 4/5] xfs: use GFP_NOFS for page cache allocation

To: xfs@xxxxxxxxxxx
Subject: [PATCH 4/5] xfs: use GFP_NOFS for page cache allocation
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Thu, 15 Jul 2010 10:38:19 +1000
In-reply-to: <1279154300-2018-1-git-send-email-david@xxxxxxxxxxxxx>
References: <1279154300-2018-1-git-send-email-david@xxxxxxxxxxxxx>
From: Dave Chinner <dchinner@xxxxxxxxxx>

Avoid a lockdep warning by preventing page cache allocation from
recursing back into the filesystem during memory reclaim.

Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
 fs/xfs/linux-2.6/xfs_aops.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index ed9c3db..1075791 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -1501,8 +1501,9 @@ xfs_vm_write_begin(
        void                    **fsdata)
 {
        *pagep = NULL;
-       return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
-                                                               xfs_get_blocks);
+       return block_write_begin(file, mapping, pos, len,
+                                (flags | AOP_FLAG_NOFS),
+                                pagep, fsdata, xfs_get_blocks);
 }
 
 STATIC sector_t
-- 
1.7.1

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