From 4f1adf3373f072246c14119b2aa6dfb4d6510a43 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Wed, 19 Apr 2017 15:19:32 -0700 Subject: [PATCH] xfs: more do_div cleanups On some architectures do_div does the pointer compare trick to make sure that we've sent it an unsigned 64-bit number. (Why unsigned? I don't know.) Fix up the few places that squawk about this; in xfs_bmap_wants_extents() we just used a bare int64_t so change that to unsigned. In xfs_adjust_extent_unmap_boundaries() all we wanted was the mod, and we have an xfs-specific function to handle that w/o side effects, which includes proper casting for do_div. In xfs_daddr_to_ag[b]no, we were using the wrong type anyway; XFS_BB_TO_FSBT returns a block in the filesystem, so use xfs_rfsblock_t not xfs_daddr_t, and gain the unsignedness from that type as a bonus. Signed-off-by: Eric Sandeen Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_bmap.c | 2 +- fs/xfs/xfs_bmap_util.c | 5 +---- fs/xfs/xfs_mount.h | 4 ++-- 3 files changed, 4 insertions(+), 7 deletions(-) diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index 7f42f60..0fdff08 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -4887,7 +4887,7 @@ xfs_bmap_del_extent_delay( ASSERT(got_endoff >= del_endoff); if (isrt) { - int64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount); + uint64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount); do_div(rtexts, mp->m_sb.sb_rextsize); xfs_mod_frextents(mp, rtexts); diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index de94798..7ac80a1 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1206,11 +1206,8 @@ xfs_adjust_extent_unmap_boundaries( return error; if (nimap && imap.br_startblock != HOLESTARTBLOCK) { - xfs_daddr_t block; - ASSERT(imap.br_startblock != DELAYSTARTBLOCK); - block = imap.br_startblock; - mod = do_div(block, mp->m_sb.sb_rextsize); + mod = do_mod(imap.br_startblock, mp->m_sb.sb_rextsize); if (mod) *startoffset_fsb += mp->m_sb.sb_rextsize - mod; } diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 22b2185..9fa312a 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -313,7 +313,7 @@ void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname, static inline xfs_agnumber_t xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) { - xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); + xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); do_div(ld, mp->m_sb.sb_agblocks); return (xfs_agnumber_t) ld; } @@ -321,7 +321,7 @@ xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) static inline xfs_agblock_t xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) { - xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); + xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); } -- 2.7.4