md/bitmap: move some fields of 'struct bitmap' into a 'storage' substruct.
This new 'struct bitmap_storage' reflects the external storage of the
bitmap.
Having this clearly defined will make it easier to change the storage
used while the array is active.
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 607771b..9e2336f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1989,7 +1989,7 @@
bitmap = rdev->mddev->bitmap;
if (bitmap && !rdev->mddev->bitmap_info.file &&
rdev->sb_start + rdev->mddev->bitmap_info.offset +
- bitmap->file_pages * (PAGE_SIZE>>9) > new_offset)
+ bitmap->storage.file_pages * (PAGE_SIZE>>9) > new_offset)
return 0;
if (rdev->badblocks.sector + rdev->badblocks.size > new_offset)
return 0;
@@ -5649,7 +5649,7 @@
goto out;
/* bitmap disabled, zero the first byte and copy out */
- if (!mddev->bitmap || !mddev->bitmap->file) {
+ if (!mddev->bitmap || !mddev->bitmap->storage.file) {
file->pathname[0] = '\0';
goto copy_out;
}
@@ -5658,7 +5658,8 @@
if (!buf)
goto out;
- ptr = d_path(&mddev->bitmap->file->f_path, buf, sizeof(file->pathname));
+ ptr = d_path(&mddev->bitmap->storage.file->f_path,
+ buf, sizeof(file->pathname));
if (IS_ERR(ptr))
goto out;
@@ -6299,7 +6300,7 @@
/* remove the bitmap */
if (!mddev->bitmap)
return -ENOENT;
- if (mddev->bitmap->file)
+ if (mddev->bitmap->storage.file)
return -EINVAL;
mddev->pers->quiesce(mddev, 1);
bitmap_destroy(mddev);