From ee714f2dd33e726346e34f5cda12543162f4753e Mon Sep 17 00:00:00 2001
From: "Martin K. Petersen" <martin.petersen@oracle.com>
Date: Wed, 10 Mar 2010 00:48:32 -0500
Subject: block: Finalize conversion of block limits functions
Remove compatibility wrappers and update remaining drivers.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
include/linux/blkdev.h | 24 ------------------------
1 file changed, 24 deletions(-)
(limited to 'include/linux/blkdev.h')
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index ebd22dbed86..41551c9341b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -921,26 +921,7 @@ extern void blk_cleanup_queue(struct request_queue *);
extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
extern void blk_queue_bounce_limit(struct request_queue *, u64);
extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
-
-/* Temporary compatibility wrapper */
-static inline void blk_queue_max_sectors(struct request_queue *q, unsigned int max)
-{
- blk_queue_max_hw_sectors(q, max);
-}
-
extern void blk_queue_max_segments(struct request_queue *, unsigned short);
-
-static inline void blk_queue_max_phys_segments(struct request_queue *q, unsigned short max)
-{
- blk_queue_max_segments(q, max);
-}
-
-static inline void blk_queue_max_hw_segments(struct request_queue *q, unsigned short max)
-{
- blk_queue_max_segments(q, max);
-}
-
-
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
extern void blk_queue_max_discard_sectors(struct request_queue *q,
unsigned int max_discard_sectors);
@@ -1030,11 +1011,6 @@ static inline int sb_issue_discard(struct super_block *sb,
extern int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm);
-#define MAX_PHYS_SEGMENTS 128
-#define MAX_HW_SEGMENTS 128
-#define SAFE_MAX_SECTORS 255
-#define MAX_SEGMENT_SIZE 65536
-
enum blk_default_limits {
BLK_MAX_SEGMENTS = 128,
BLK_SAFE_MAX_SECTORS = 255,
--
cgit v1.2.3-70-g09d2
From 181fdde3b4268cb7b4af76ba6337e7ec8accbb36 Mon Sep 17 00:00:00 2001
From: Richard Kennedy <richard@rsk.demon.co.uk>
Date: Fri, 19 Mar 2010 08:58:16 +0100
Subject: block: remove 16 bytes of padding from struct request on 64bits
Remove alignment padding to shrink struct request from 336 to 320 bytes
so needing one fewer cacheline and therefore removing 48 bytes from
struct request_queue.
Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
include/linux/blkdev.h | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
(limited to 'include/linux/blkdev.h')
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 41551c9341b..6690e8bae7b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -158,7 +158,6 @@ enum rq_flag_bits {
struct request {
struct list_head queuelist;
struct call_single_data csd;
- int cpu;
struct request_queue *q;
@@ -166,9 +165,11 @@ struct request {
enum rq_cmd_type_bits cmd_type;
unsigned long atomic_flags;
+ int cpu;
+
/* the following two fields are internal, NEVER access directly */
- sector_t __sector; /* sector cursor */
unsigned int __data_len; /* total data len */
+ sector_t __sector; /* sector cursor */
struct bio *bio;
struct bio *biotail;
@@ -201,20 +202,20 @@ struct request {
unsigned short ioprio;
+ int ref_count;
+
void *special; /* opaque pointer available for LLD use */
char *buffer; /* kaddr of the current segment if available */
int tag;
int errors;
- int ref_count;
-
/*
* when request is used as a packet command carrier
*/
- unsigned short cmd_len;
unsigned char __cmd[BLK_MAX_CDB];
unsigned char *cmd;
+ unsigned short cmd_len;
unsigned int extra_len; /* length of alignment and padding */
unsigned int sense_len;
--
cgit v1.2.3-70-g09d2