Commit b5ff97c7 authored by Jan Kara's avatar Jan Kara Committed by Greg Kroah-Hartman

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

commit d7fd2425 upstream.

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: default avatarJan Kara <jack@suse.cz>
Reviewed-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d514c634
...@@ -1043,7 +1043,7 @@ xfs_find_get_desired_pgoff( ...@@ -1043,7 +1043,7 @@ xfs_find_get_desired_pgoff(
index = startoff >> PAGE_SHIFT; index = startoff >> PAGE_SHIFT;
endoff = XFS_FSB_TO_B(mp, map->br_startoff + map->br_blockcount); endoff = XFS_FSB_TO_B(mp, map->br_startoff + map->br_blockcount);
end = endoff >> PAGE_SHIFT; end = (endoff - 1) >> PAGE_SHIFT;
do { do {
int want; int want;
unsigned nr_pages; unsigned nr_pages;
......
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