[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>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 373ab92..63c5661 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2430,7 +2430,7 @@
{
int err;
- if (mddev->pers)
+ if (mddev->pers || mddev->bitmap_file)
return -EBUSY;
mddev->bitmap_file = fget(fd);