xfs: simplify xfs_map_at_offset
Move the buffer locking into the callers as they need to do it
wether they call xfs_map_at_offset or not. Remove the b_bdev
assignment, which is already done by get_blocks. Remove the
duplicate extent type asserts in xfs_convert_page just before
calling xfs_map_at_offset.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c
index 4d982dc..ec7bbb56 100644
--- a/fs/xfs/linux-2.6/xfs_aops.c
+++ b/fs/xfs/linux-2.6/xfs_aops.c
@@ -626,9 +626,7 @@
ASSERT(imap->br_startblock != HOLESTARTBLOCK);
ASSERT(imap->br_startblock != DELAYSTARTBLOCK);
- lock_buffer(bh);
xfs_map_buffer(inode, bh, imap, offset);
- bh->b_bdev = xfs_find_bdev_for_inode(inode);
set_buffer_mapped(bh);
clear_buffer_delay(bh);
clear_buffer_unwritten(bh);
@@ -751,12 +749,8 @@
continue;
}
- ASSERT(imap->br_startblock != HOLESTARTBLOCK);
- ASSERT(imap->br_startblock != DELAYSTARTBLOCK);
-
- if (type == IO_OVERWRITE)
- lock_buffer(bh);
- else
+ lock_buffer(bh);
+ if (type != IO_OVERWRITE)
xfs_map_at_offset(inode, bh, imap, offset);
xfs_add_to_ioend(inode, bh, offset, type,
ioendp, done);
@@ -1041,9 +1035,8 @@
imap_valid = xfs_imap_valid(inode, &imap, offset);
}
if (imap_valid) {
- if (type == IO_OVERWRITE)
- lock_buffer(bh);
- else
+ lock_buffer(bh);
+ if (type != IO_OVERWRITE)
xfs_map_at_offset(inode, bh, &imap, offset);
xfs_add_to_ioend(inode, bh, offset, type, &ioend,
new_ioend);