xfs: always use unwritten extents for direct I/O writes
To allow aio writes beyond i_size we need to create unwritten extents for
newly allocated blocks, similar to how we already do inside i_size.
Instead of adding another special case we now use unwritten extents
unconditionally. This also marks the end of directly allocation data
extents in all of XFS - we now always use either delalloc or unwritten
extents.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 22d1cbe..3b80eba 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -128,7 +128,6 @@
xfs_fsblock_t firstfsb;
xfs_extlen_t extsz, temp;
int nimaps;
- int bmapi_flag;
int quota_flag;
int rt;
xfs_trans_t *tp;
@@ -200,18 +199,15 @@
xfs_trans_ijoin(tp, ip, 0);
- bmapi_flag = 0;
- if (offset < XFS_ISIZE(ip) || extsz)
- bmapi_flag |= XFS_BMAPI_PREALLOC;
-
/*
* From this point onwards we overwrite the imap pointer that the
* caller gave to us.
*/
xfs_bmap_init(&free_list, &firstfsb);
nimaps = 1;
- error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb, bmapi_flag,
- &firstfsb, 0, imap, &nimaps, &free_list);
+ error = xfs_bmapi_write(tp, ip, offset_fsb, count_fsb,
+ XFS_BMAPI_PREALLOC, &firstfsb, 0,
+ imap, &nimaps, &free_list);
if (error)
goto out_bmap_cancel;