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md/bitmap: remove unused fields from struct bitmap 

Get rid of ->syncchunk and ->counter_bits since they're never used.

Also discard COUNTER_BYTE_RATIO which is unused.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Namhyung Kim 2011-06-09 11:43:01 +10:00 committed by NeilBrown
parent 27d5ea04d0
commit 97b3d4aacf
2 changed files with 0 additions and 13 deletions
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3
drivers/md/bitmap.c
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@ -1837,9 +1837,6 @@ int bitmap_create(mddev_t *mddev)
bitmap->chunks = chunks;
bitmap->pages = pages;
bitmap->missing_pages = pages;
bitmap->counter_bits = COUNTER_BITS;
bitmap->syncchunk = ~0UL;
#ifdef INJECT_FATAL_FAULT_1
bitmap->bp = NULL;

10
drivers/md/bitmap.h
View File

@ -85,7 +85,6 @@
typedef __u16 bitmap_counter_t;
#define COUNTER_BITS 16
#define COUNTER_BIT_SHIFT 4
#define COUNTER_BYTE_RATIO (COUNTER_BITS / 8)
#define COUNTER_BYTE_SHIFT (COUNTER_BIT_SHIFT - 3)
#define NEEDED_MASK ((bitmap_counter_t) (1 << (COUNTER_BITS - 1)))
@ -196,19 +195,10 @@ struct bitmap {
mddev_t *mddev; /* the md device that the bitmap is for */
int counter_bits; /* how many bits per block counter */
/* bitmap chunksize -- how much data does each bit represent? */
unsigned long chunkshift; /* chunksize = 2^chunkshift (for bitops) */
unsigned long chunks; /* total number of data chunks for the array */
/* We hold a count on the chunk currently being synced, and drop
* it when the last block is started. If the resync is aborted
* midway, we need to be able to drop that count, so we remember
* the counted chunk..
*/
unsigned long syncchunk;
__u64 events_cleared;
int need_sync;