GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

[PATCH] dm: extract device limit setting

Browse source 
Separate the setting of device I/O limits from dm_get_device().  dm-loop will
use this.

Signed-off-by: Bryn Reeves <breeves@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Bryn Reeves 2006-10-03 01:15:42 -07:00 • committed by Linus Torvalds
parent 9faf400f7e
commit 3cb4021453
2 changed files with 53 additions and 43 deletions
Download patch file Download diff file Expand all files Collapse all files

19
drivers/md/dm-table.c
View file

@ -522,14 +522,9 @@ static int __table_get_device(struct dm_table *t, struct dm_target *ti,
return 0; return 0;
} }
void dm_set_device_limits(struct dm_target *ti, struct block_device *bdev)
int dm_get_device(struct dm_target *ti, const char *path, sector_t start,
sector_t len, int mode, struct dm_dev **result)
{ {
int r = __table_get_device(ti->table, ti, path, request_queue_t *q = bdev_get_queue(bdev);
start, len, mode, result);
if (!r) {
request_queue_t *q = bdev_get_queue((*result)->bdev);
struct io_restrictions *rs = &ti->limits; struct io_restrictions *rs = &ti->limits;
/* /*
@ -572,6 +567,16 @@ int dm_get_device(struct dm_target *ti, const char *path, sector_t start,
rs->no_cluster |= !test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags); rs->no_cluster |= !test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
} }
EXPORT_SYMBOL_GPL(dm_set_device_limits);
int dm_get_device(struct dm_target *ti, const char *path, sector_t start,
sector_t len, int mode, struct dm_dev **result)
{
int r = __table_get_device(ti->table, ti, path,
start, len, mode, result);
if (!r)
dm_set_device_limits(ti, (*result)->bdev);
return r; return r;
} }

5
include/linux/device-mapper.h
View file

@ -71,6 +71,11 @@ typedef int (*dm_ioctl_fn) (struct dm_target *ti, struct inode *inode,
void dm_error(const char *message); void dm_error(const char *message);
/*
* Combine device limits.
*/
void dm_set_device_limits(struct dm_target *ti, struct block_device *bdev);
/* /*
* Constructors should call these functions to ensure destination devices * Constructors should call these functions to ensure destination devices
* are opened/closed correctly. * are opened/closed correctly.