p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

block: move internal_tag to same cache line as tag 

Since we removed cmd_type, we now have a hole in the struct. Move
the internal_tag member to the same cacheline as tag, since we
use them at the same time.

This doesn't fix the hole, just moves it elsewhere.

Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Jens Axboe 2017-01-31 12:34:41 -07:00
parent aebf526b53
commit d486f1f204
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/linux/blkdev.h
View File

@ -138,6 +138,9 @@ struct request {
int cpu;
unsigned int cmd_flags; /* op and common flags */
req_flags_t rq_flags;
int internal_tag;
unsigned long atomic_flags;
/* the following two fields are internal, NEVER access directly */
@ -209,8 +212,6 @@ struct request {
unsigned short ioprio;
int internal_tag;
void *special; /* opaque pointer available for LLD use */
int errors;