[PATCH 02/21] drbd: simplify drbd_md_set_sector_offsets()

From: Fabian Frederick
Date: Fri Nov 27 2015 - 16:27:35 EST


Some metadata informations were duplicated in layout switch.

Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
drivers/block/drbd/drbd_nl.c | 24 +++++++++++-------------
1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index c055c5e..ef136a9 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -794,20 +794,9 @@ static void drbd_md_set_sector_offsets(struct drbd_device *device,
unsigned int al_size_sect = bdev->md.al_size_4k * 8;

bdev->md.md_offset = drbd_md_ss(bdev);
+ md_size_sect = MD_128MB_SECT;

switch (bdev->md.meta_dev_idx) {
- default:
- /* v07 style fixed size indexed meta data */
- bdev->md.md_size_sect = MD_128MB_SECT;
- bdev->md.al_offset = MD_4kB_SECT;
- bdev->md.bm_offset = MD_4kB_SECT + al_size_sect;
- break;
- case DRBD_MD_INDEX_FLEX_EXT:
- /* just occupy the full device; unit: sectors */
- bdev->md.md_size_sect = drbd_get_capacity(bdev->md_bdev);
- bdev->md.al_offset = MD_4kB_SECT;
- bdev->md.bm_offset = MD_4kB_SECT + al_size_sect;
- break;
case DRBD_MD_INDEX_INTERNAL:
case DRBD_MD_INDEX_FLEX_INT:
/* al size is still fixed */
@@ -822,11 +811,20 @@ static void drbd_md_set_sector_offsets(struct drbd_device *device,
* and the activity log; */
md_size_sect += MD_4kB_SECT + al_size_sect;

- bdev->md.md_size_sect = md_size_sect;
/* bitmap offset is adjusted by 'super' block size */
bdev->md.bm_offset = -md_size_sect + MD_4kB_SECT;
break;
+ case DRBD_MD_INDEX_FLEX_EXT:
+ /* just occupy the full device; unit: sectors */
+ md_size_sect = drbd_get_capacity(bdev->md_bdev);
+ default:
+ /* v07 style fixed size indexed meta data */
+ bdev->md.al_offset = MD_4kB_SECT;
+ bdev->md.bm_offset = MD_4kB_SECT + al_size_sect;
+ break;
}
+
+ bdev->md.md_size_sect = md_size_sect;
}

/* input size is expected to be in KB */
--
2.1.4

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