tree 013edf60a13fd0a551e95bf76a1284209ecd23c2
parent c9f71f5fc4390ea3a8087c00d53a799e7e0f0f8e
author Christoph Hellwig <hch@infradead.org> 1291970536 +0000
committer Alex Elder <aelder@sgi.com> 1292537134 -0600

xfs: improve mapping type check in xfs_vm_writepage

Currently we only refuse a "read-only" mapping for writing out
unwritten and delayed buffers, and refuse any other for overwrites.
Improve the checks to require delalloc mappings for delayed buffers,
and unwritten extent mappings for unwritten extents.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>