Commit cbb38732 authored Oct 31, 2016 by Guoqing Jiang Committed by Shaohua Li Nov 07, 2016

md/bitmap: call bitmap_file_unmap once bitmap_storage_alloc returns -ENOMEM



It is possible that bitmap_storage_alloc could return -ENOMEM,
and some member inside store could be allocated such as filemap.

To avoid memory leak, we need to call bitmap_file_unmap to free
those members in the bitmap_resize.

Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>

parent 7adb072c

drivers/md/bitmap.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -2029,8 +2029,10 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
		!bitmap->mddev->bitmap_info.external,
		mddev_is_clustered(bitmap->mddev)
		? bitmap->cluster_slot : 0);
		if (ret)
		if (ret) {
		bitmap_file_unmap(&store);
		goto err;
		}

		pages = DIV_ROUND_UP(chunks, PAGE_COUNTER_RATIO);