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authorNeilBrown <neilb@suse.de>2012-11-19 00:47:48 +0100
committerNeilBrown <neilb@suse.de>2012-11-20 00:27:37 +0100
commit5eff3c439d3478ba9e8ba5f8c0aaf6e6fadb6e58 (patch)
tree4e60271793978e8ee07f73360a2044a33a8d91de /drivers/md/md.c
parentmd: Avoid write invalid address if read_seqretry returned true. (diff)
downloadlinux-5eff3c439d3478ba9e8ba5f8c0aaf6e6fadb6e58.tar.xz
linux-5eff3c439d3478ba9e8ba5f8c0aaf6e6fadb6e58.zip
md: make sure everything is freed when dm-raid stops an array.
md_stop() would stop an array, but not free various attached data structures. For internal arrays, these are freed later in do_md_stop() or mddev_put(), but they don't apply for dm-raid arrays. So get md_stop() to free them, and only all it from dm-raid. For internal arrays we now call __md_stop. Reported-by: majianpeng <majianpeng@gmail.com> Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'drivers/md/md.c')
-rw-r--r--drivers/md/md.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 4c7d880a60a4..61200717687b 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5294,7 +5294,7 @@ void md_stop_writes(struct mddev *mddev)
}
EXPORT_SYMBOL_GPL(md_stop_writes);
-void md_stop(struct mddev *mddev)
+static void __md_stop(struct mddev *mddev)
{
mddev->ready = 0;
mddev->pers->stop(mddev);
@@ -5304,6 +5304,18 @@ void md_stop(struct mddev *mddev)
mddev->pers = NULL;
clear_bit(MD_RECOVERY_FROZEN, &mddev->recovery);
}
+
+void md_stop(struct mddev *mddev)
+{
+ /* stop the array and free an attached data structures.
+ * This is called from dm-raid
+ */
+ __md_stop(mddev);
+ bitmap_destroy(mddev);
+ if (mddev->bio_set)
+ bioset_free(mddev->bio_set);
+}
+
EXPORT_SYMBOL_GPL(md_stop);
static int md_set_readonly(struct mddev *mddev, struct block_device *bdev)
@@ -5364,7 +5376,7 @@ static int do_md_stop(struct mddev * mddev, int mode,
set_disk_ro(disk, 0);
__md_stop_writes(mddev);
- md_stop(mddev);
+ __md_stop(mddev);
mddev->queue->merge_bvec_fn = NULL;
mddev->queue->backing_dev_info.congested_fn = NULL;