[PATCH] md: don't allow new md/bitmap file to be set if one already exists

... otherwise we loose a reference and can never free the file.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 373ab92e367b..63c566165189 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2430,7 +2430,7 @@ static int set_bitmap_file(mddev_t *mddev, int fd)
 {
         int err;
 
-        if (mddev->pers)
+        if (mddev->pers || mddev->bitmap_file)
                 return -EBUSY;
 
         mddev->bitmap_file = fget(fd);