xfs: fix xfs_iomap_eof_prealloc_initial_size type

[firefly-linux-kernel-4.4.55.git] / fs / xfs / xfs_iomap.c

diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 912d83d8860a984a938b604f3e2447c3e390ce89..c8cb337efccf6923e474185548966fd7f9c43810 100644 (file)
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -325,7 +325,7 @@ xfs_iomap_eof_want_preallocate(
  * rather than falling short due to things like stripe unit/width alignment of
  * real extents.
  */
-STATIC int
+STATIC xfs_fsblock_t
 xfs_iomap_eof_prealloc_initial_size(
        struct xfs_mount        *mp,
        struct xfs_inode        *ip,
@@ -362,7 +362,7 @@ xfs_iomap_eof_prealloc_initial_size(
        if (imap[0].br_startblock == HOLESTARTBLOCK)
                return 0;
        if (imap[0].br_blockcount <= (MAXEXTLEN >> 1))
-               return imap[0].br_blockcount;
+               return imap[0].br_blockcount << 1;
        return XFS_B_TO_FSB(mp, offset);
 }
 
@@ -413,7 +413,7 @@ xfs_iomap_prealloc_size(
                 * have a large file on a small filesystem and the above
                 * lowspace thresholds are smaller than MAXEXTLEN.
                 */
-               while (alloc_blocks >= freesp)
+               while (alloc_blocks && alloc_blocks >= freesp)
                        alloc_blocks >>= 4;
        }