From: "Darrick J. Wong" <djwong@us.ibm.com>
To: Christoph Hellwig <hch@infradead.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
"Darrick J. Wong" <djwong@us.ibm.com>
Cc: Jens Axboe <axboe@kernel.dk>, Theodore Tso <tytso@mit.edu>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Jeff Layton <jlayton@redhat.com>,
Dave Chinner <david@fromorbit.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Dave Hansen <dave@linux.vnet.ibm.com>,
linux-mm@kvack.org, Chris Mason <chris.mason@oracle.com>,
Joel Becker <jlbec@evilplan.org>,
linux-scsi <linux-scsi@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Jan Kara <jack@suse.cz>,
linux-ext4@vger.kernel.org, Mingming Cao <mcao@us.ibm.com>
Subject: [PATCH 2/2] fs: block_page_mkwrite should wait for writeback to finish
Date: Fri, 27 May 2011 12:23:41 -0700 [thread overview]
Message-ID: <20110527192341.32105.95751.stgit@elm3c44.beaverton.ibm.com> (raw)
In-Reply-To: <20110527192326.32105.34164.stgit@elm3c44.beaverton.ibm.com>
For filesystems such as nilfs2 and xfs that use block_page_mkwrite, modify that
function to wait for pending writeback before allowing the page to become
writable. This is needed to stabilize pages during writeback for those two
filesystems.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
---
fs/buffer.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/fs/buffer.c b/fs/buffer.c
index 698c6b2..49c9aad 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2382,6 +2382,7 @@ int __block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
ret = -EAGAIN;
goto out_unlock;
}
+ wait_on_page_writeback(page);
return 0;
out_unlock:
unlock_page(page);
--
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prev parent reply other threads:[~2011-05-27 19:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-27 19:23 [PATCHSET v3.3 0/2] data integrity: Stabilize pages during writeback for various fses Darrick J. Wong
2011-05-27 19:23 ` [PATCH 1/2] mm: Wait for writeback when grabbing pages to begin a write Darrick J. Wong
2011-05-27 19:23 ` Darrick J. Wong [this message]
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