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xfs: always init bma in xfs_bmapi_write 

Always init the tp/ip fields of bma in xfs_bmapi_write so that the
bmapi_finish at the bottom never trips over null transaction or inode
pointers.

Coverity-id: 1443964
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong 2019-03-19 08:16:22 -07:00
parent a72e9d8d69
commit 4b0bce30f3
1 changed files with 5 additions and 5 deletions
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10
fs/xfs/libxfs/xfs_bmap.c
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@ -4252,9 +4252,13 @@ xfs_bmapi_write(
struct xfs_bmbt_irec *mval, /* output: map values */
int *nmap) /* i/o: mval size/count */
{
struct xfs_bmalloca bma = {
.tp = tp,
.ip = ip,
.total = total,
};
struct xfs_mount *mp = ip->i_mount;
struct xfs_ifork *ifp;
struct xfs_bmalloca bma = { NULL }; /* args for xfs_bmap_alloc */
xfs_fileoff_t end; /* end of mapped file region */
bool eof = false; /* after the end of extents */
int error; /* error return */
@ -4322,10 +4326,6 @@ xfs_bmapi_write(
eof = true;
if (!xfs_iext_peek_prev_extent(ifp, &bma.icur, &bma.prev))
bma.prev.br_startoff = NULLFILEOFF;
bma.tp = tp;
bma.ip = ip;
bma.total = total;
bma.datatype = 0;
bma.minleft = xfs_bmapi_minleft(tp, ip, whichfork);
n = 0;