提交 d7fd2425 编写于 作者: J Jan Kara 提交者: Darrick J. Wong

xfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff()

There is an off-by-one error in loop termination conditions in
xfs_find_get_desired_pgoff() since 'end' may index a page beyond end of
desired range if 'endoff' is page aligned. It doesn't have any visible
effects but still it is good to fix it.
Signed-off-by: NJan Kara <jack@suse.cz>
Reviewed-by: NDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
上级 5375023a
......@@ -1043,7 +1043,7 @@ xfs_find_get_desired_pgoff(
index = startoff >> PAGE_SHIFT;
endoff = XFS_FSB_TO_B(mp, map->br_startoff + map->br_blockcount);
end = endoff >> PAGE_SHIFT;
end = (endoff - 1) >> PAGE_SHIFT;
do {
int want;
unsigned nr_pages;
......
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