From 978f946bb628ef228e13aadf4d4255b8727c4fc3 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 2 Feb 2006 14:28:05 -0800 Subject: [PATCH] [PATCH] md: Don't remove bitmap from md array when switching to read-only While a read-only array doesn't not really need a bitmap, we should not remove the bitmap when switching an array to read-only because a/ There is no code to re-add the bitmap which switching to read-write, b/ There is insufficient locking - the bitmap could be accessed while it is being removed. Cc: Reuben Farrelly Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/md/md.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 06dee51456e8..653d4dcbee23 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2689,14 +2689,6 @@ static int do_md_stop(mddev_t * mddev, int ro) set_disk_ro(disk, 1); } - bitmap_destroy(mddev); - if (mddev->bitmap_file) { - atomic_set(&mddev->bitmap_file->f_dentry->d_inode->i_writecount, 1); - fput(mddev->bitmap_file); - mddev->bitmap_file = NULL; - } - mddev->bitmap_offset = 0; - /* * Free resources if final stop */ @@ -2706,6 +2698,14 @@ static int do_md_stop(mddev_t * mddev, int ro) struct gendisk *disk; printk(KERN_INFO "md: %s stopped.\n", mdname(mddev)); + bitmap_destroy(mddev); + if (mddev->bitmap_file) { + atomic_set(&mddev->bitmap_file->f_dentry->d_inode->i_writecount, 1); + fput(mddev->bitmap_file); + mddev->bitmap_file = NULL; + } + mddev->bitmap_offset = 0; + ITERATE_RDEV(mddev,rdev,tmp) if (rdev->raid_disk >= 0) { char nm[20]; -- 2.30.2