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-rw-r--r--drivers/md/bitmap.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 67e992185a24..d2121637b4ab 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -2058,6 +2058,11 @@ int bitmap_resize(struct bitmap *bitmap, sector_t blocks,
long pages;
struct bitmap_page *new_bp;
+ if (bitmap->storage.file && !init) {
+ pr_info("md: cannot resize file-based bitmap\n");
+ return -EINVAL;
+ }
+
if (chunksize == 0) {
/* If there is enough space, leave the chunk size unchanged,
* else increase by factor of two until there is enough space.
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