bitmap_create returns bitmap pointer

This is done to have multiple bitmaps open at the same time.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>

1 files changed, 19 insertions, 6 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 71f655015385..630a9142a819 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5076,10 +5076,16 @@ int md_run(struct mddev *mddev)
         }
         if (err == 0 && pers->sync_request &&
             (mddev->bitmap_info.file || mddev->bitmap_info.offset)) {
-                err = bitmap_create(mddev);
-                if (err)
+                struct bitmap *bitmap;
+
+                bitmap = bitmap_create(mddev, -1);
+                if (IS_ERR(bitmap)) {
+                        err = PTR_ERR(bitmap);
                         printk(KERN_ERR "%s: failed to create bitmap (%d)\n",
                                mdname(mddev), err);
+                } else
+                        mddev->bitmap = bitmap;
+
         }
         if (err) {
                 mddev_detach(mddev);
@@ -6039,9 +6045,13 @@ static int set_bitmap_file(struct mddev *mddev, int fd)
         if (mddev->pers) {
                 mddev->pers->quiesce(mddev, 1);
                 if (fd >= 0) {
-                        err = bitmap_create(mddev);
-                        if (!err)
+                        struct bitmap *bitmap;
+
+                        bitmap = bitmap_create(mddev, -1);
+                        if (!IS_ERR(bitmap)) {
+                                mddev->bitmap = bitmap;
                                 err = bitmap_load(mddev);
+                        }
                 }
                 if (fd < 0 || err) {
                         bitmap_destroy(mddev);
@@ -6306,6 +6316,7 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
                 if (mddev->recovery || mddev->sync_thread)
                         return -EBUSY;
                 if (info->state & (1<<MD_SB_BITMAP_PRESENT)) {
+                        struct bitmap *bitmap;
                         /* add the bitmap */
                         if (mddev->bitmap)
                                 return -EEXIST;
@@ -6316,9 +6327,11 @@ static int update_array_info(struct mddev *mddev, mdu_array_info_t *info)
                         mddev->bitmap_info.space =
                                 mddev->bitmap_info.default_space;
                         mddev->pers->quiesce(mddev, 1);
-                        rv = bitmap_create(mddev);
-                        if (!rv)
+                        bitmap = bitmap_create(mddev, -1);
+                        if (!IS_ERR(bitmap)) {
+                                mddev->bitmap = bitmap;
                                 rv = bitmap_load(mddev);
+                        }
                         if (rv)
                                 bitmap_destroy(mddev);
                         mddev->pers->quiesce(mddev, 0);