xfs: suppress spurious uninitialised var warning in xfs_bmapi()

Initialise the xfs_bmalloca_t structure to zero to avoid uninitialised
variable warnings. This is done by zeroing the arg structure rather than
using the uninitialised_var() trick so we know for certain that the
structure is correctly initialised as xfs_bmapi is a very complex
function and it is difficult to prove warnings are spurious.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 7c6d9acd7154..1869fb973819 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -4471,7 +4471,7 @@ xfs_bmapi(
         xfs_fsblock_t   abno;           /* allocated block number */
         xfs_extlen_t    alen;           /* allocated extent length */
         xfs_fileoff_t   aoff;           /* allocated file offset */
-        xfs_bmalloca_t  bma;            /* args for xfs_bmap_alloc */
+        xfs_bmalloca_t  bma = { 0 };    /* args for xfs_bmap_alloc */
         xfs_btree_cur_t *cur;           /* bmap btree cursor */
         xfs_fileoff_t   end;            /* end of mapped file region */
         int             eof;            /* we've hit the end of extents */