]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commit
xfs: simplify xfs_vm_writepage
authorChristoph Hellwig <hch@infradead.org>
Wed, 23 Jun 2010 23:46:01 +0000 (09:46 +1000)
committerAlex Elder <aelder@sgi.com>
Mon, 26 Jul 2010 18:16:41 +0000 (13:16 -0500)
commit20cb52ebd1b5ca6fa8a5d9b6b1392292f5ca8a45
treec4644ab4b8b12d2c6100fb47c7dfa4c5949107ca
parent89f3b363967a958e756a549c8747c1fb9c930c1a
xfs: simplify xfs_vm_writepage

The writepage implementation in XFS still tries to deal with dirty but
unmapped buffers which used to caused by writes through shared mmaps.  Since
the introduction of ->page_mkwrite these can't happen anymore, so remove the
code dealing with them.

Note that the all_bh variable which causes us to start I/O on all buffers on
the pages was controlled by the count of unmapped buffers, which also
included those not actually dirty.  It's now unconditionally initialized to
0 but set to 1 for the case of small file size extensions.  It probably can
be removed entirely, but that's left for another patch.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
fs/xfs/linux-2.6/xfs_aops.c
fs/xfs/linux-2.6/xfs_aops.h
fs/xfs/linux-2.6/xfs_trace.h