On Tue, Oct 31, 2017 at 04:22:18PM +0200, Christoph Hellwig wrote: > Stop poking before and after the index and just increment or decrement > it while doing our operations on it to prepare for a new extent list > implementation. > > Signed-off-by: Christoph Hellwig <hch@xxxxxx> > --- Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx> > fs/xfs/libxfs/xfs_bmap.c | 35 ++++++++++++++++++----------------- > 1 file changed, 18 insertions(+), 17 deletions(-) > > diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c > index 7bd27c08981f..10878c495869 100644 > --- a/fs/xfs/libxfs/xfs_bmap.c > +++ b/fs/xfs/libxfs/xfs_bmap.c > @@ -2151,12 +2151,11 @@ xfs_bmap_add_extent_unwritten_real( > * Setting all of a previous oldext extent to newext. > * The left and right neighbors are both contiguous with new. > */ > - --*idx; > - > LEFT.br_blockcount += PREV.br_blockcount + RIGHT.br_blockcount; > - xfs_iext_update_extent(ip, state, *idx, &LEFT); > > - xfs_iext_remove(ip, *idx + 1, 2, state); > + xfs_iext_remove(ip, *idx, 2, state); > + --*idx; > + xfs_iext_update_extent(ip, state, *idx, &LEFT); > XFS_IFORK_NEXT_SET(ip, whichfork, > XFS_IFORK_NEXTENTS(ip, whichfork) - 2); > if (cur == NULL) > @@ -2190,12 +2189,11 @@ xfs_bmap_add_extent_unwritten_real( > * Setting all of a previous oldext extent to newext. > * The left neighbor is contiguous, the right is not. > */ > - --*idx; > - > LEFT.br_blockcount += PREV.br_blockcount; > - xfs_iext_update_extent(ip, state, *idx, &LEFT); > > - xfs_iext_remove(ip, *idx + 1, 1, state); > + xfs_iext_remove(ip, *idx, 1, state); > + --*idx; > + xfs_iext_update_extent(ip, state, *idx, &LEFT); > XFS_IFORK_NEXT_SET(ip, whichfork, > XFS_IFORK_NEXTENTS(ip, whichfork) - 1); > if (cur == NULL) > @@ -2225,9 +2223,12 @@ xfs_bmap_add_extent_unwritten_real( > */ > PREV.br_blockcount += RIGHT.br_blockcount; > PREV.br_state = new->br_state; > + > + ++*idx; > + xfs_iext_remove(ip, *idx, 1, state); > + --*idx; > xfs_iext_update_extent(ip, state, *idx, &PREV); > > - xfs_iext_remove(ip, *idx + 1, 1, state); > XFS_IFORK_NEXT_SET(ip, whichfork, > XFS_IFORK_NEXTENTS(ip, whichfork) - 1); > if (cur == NULL) > @@ -2279,15 +2280,15 @@ xfs_bmap_add_extent_unwritten_real( > * The left neighbor is contiguous. > */ > LEFT.br_blockcount += new->br_blockcount; > - xfs_iext_update_extent(ip, state, *idx - 1, &LEFT); > > old = PREV; > PREV.br_startoff += new->br_blockcount; > PREV.br_startblock += new->br_blockcount; > PREV.br_blockcount -= new->br_blockcount; > - xfs_iext_update_extent(ip, state, *idx, &PREV); > > + xfs_iext_update_extent(ip, state, *idx, &PREV); > --*idx; > + xfs_iext_update_extent(ip, state, *idx, &LEFT); > > if (cur == NULL) > rval = XFS_ILOG_DEXT; > @@ -2318,8 +2319,8 @@ xfs_bmap_add_extent_unwritten_real( > PREV.br_startoff += new->br_blockcount; > PREV.br_startblock += new->br_blockcount; > PREV.br_blockcount -= new->br_blockcount; > - xfs_iext_update_extent(ip, state, *idx, &PREV); > > + xfs_iext_update_extent(ip, state, *idx, &PREV); > xfs_iext_insert(ip, *idx, 1, new, state); > XFS_IFORK_NEXT_SET(ip, whichfork, > XFS_IFORK_NEXTENTS(ip, whichfork) + 1); > @@ -2348,13 +2349,13 @@ xfs_bmap_add_extent_unwritten_real( > */ > old = PREV; > PREV.br_blockcount -= new->br_blockcount; > - xfs_iext_update_extent(ip, state, *idx, &PREV); > - > - ++*idx; > > RIGHT.br_startoff = new->br_startoff; > RIGHT.br_startblock = new->br_startblock; > RIGHT.br_blockcount += new->br_blockcount; > + > + xfs_iext_update_extent(ip, state, *idx, &PREV); > + ++*idx; > xfs_iext_update_extent(ip, state, *idx, &RIGHT); > > if (cur == NULL) > @@ -2384,8 +2385,8 @@ xfs_bmap_add_extent_unwritten_real( > */ > old = PREV; > PREV.br_blockcount -= new->br_blockcount; > - xfs_iext_update_extent(ip, state, *idx, &PREV); > > + xfs_iext_update_extent(ip, state, *idx, &PREV); > ++*idx; > xfs_iext_insert(ip, *idx, 1, new, state); > > @@ -2420,7 +2421,6 @@ xfs_bmap_add_extent_unwritten_real( > */ > old = PREV; > PREV.br_blockcount = new->br_startoff - PREV.br_startoff; > - xfs_iext_update_extent(ip, state, *idx, &PREV); > > r[0] = *new; > r[1].br_startoff = new_endoff; > @@ -2429,6 +2429,7 @@ xfs_bmap_add_extent_unwritten_real( > r[1].br_startblock = new->br_startblock + new->br_blockcount; > r[1].br_state = PREV.br_state; > > + xfs_iext_update_extent(ip, state, *idx, &PREV); > ++*idx; > xfs_iext_insert(ip, *idx, 2, &r[0], state); > > -- > 2.14.2 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-xfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
