openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

A fix for stacked dm thin devices and a fix for the new dm WRITE SAME 

support.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJRCn+IAAoJEK2W1qbAHj1naQEP/2eXMOslRyws7M6CcsEgpEK9
 N2L2hf6bD3xF/04ZSLbHFI6hPe9wDXSL9Vxd+DRLYTSnc0E9WYBXHmE6Eb0L0xK8
 m0Iubk/hi7mk6mnMJtpTFT5pazBTPhVz0nXOijguh5U6PW0xL+4ypXe9nrH2jtW0
 DvEHFDIPbKcqwplm8nvo/QJ5O3YNQaMifKUtpXF/JWGlCYP4vPk0dJVg9ATbscEV
 Fg3kefoJzZM09q3Uvo01wigbj+wRkpBK9+CiyW6XcE0lkOAnFmpvyYerIoAHAK37
 Rsw5J4aMPA9U8mggBEtlHBWa0q5utZafHM11lT2ZeFGCXkdn+TSWni6O7ov54xPP
 Cd7jx+uNpe/OuLT5YjbCg2IMXgJs+zIZMSeqSj3SrywE0a0EQHECWiXaFmMmrCCJ
 TgZtmp/HS1UsdoiHA3v3ZX3AaX4W+mggYp/5md9P1vHyYS9uTlgSVplhwtVgsL23
 EsDxNNxODSIFMAMnrXxAV+NBPiQRY42K22hK/RrnWew9roAQHxroIvQDmzzm5ZRL
 BqCFW3w/x2loJOZZ6NH/J8IUEoF9RhCK1tOGVjFuAVn30srt3zXb4pOzYeydykT7
 m04HaGO7rCBJI75XdVDhm6ozOvV/GhXF2fJOt4qyoX/X6M8YN5i0jfwC3rhKeuOe
 U9fyyYoQV37EWIRI9K5Q
 =qtaF
 -----END PGP SIGNATURE-----

Merge tag 'dm-3.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm

Pull more device-mapper fixes from Alasdair G Kergon:
 "A fix for stacked dm thin devices and a fix for the new dm WRITE SAME
  support."

* tag 'dm-3.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm: fix write same requests counting
  dm thin: fix queue limits stacking
This commit is contained in:
Linus Torvalds 2013-02-01 12:04:22 +11:00
parent cf5425bfcd fe7af2d3ba
commit cc6c954a07
2 changed files with 5 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/md/dm-thin.c
View File

@ -2746,19 +2746,9 @@ static int thin_iterate_devices(struct dm_target *ti,
return 0;
}
/*
* A thin device always inherits its queue limits from its pool.
*/
static void thin_io_hints(struct dm_target *ti, struct queue_limits *limits)
{
struct thin_c *tc = ti->private;
*limits = bdev_get_queue(tc->pool_dev->bdev)->limits;
}
static struct target_type thin_target = {
.name = "thin",
.version = {1, 6, 0},
.version = {1, 7, 0},
.module = THIS_MODULE,
.ctr = thin_ctr,
.dtr = thin_dtr,
@ -2767,7 +2757,6 @@ static struct target_type thin_target = {
.postsuspend = thin_postsuspend,
.status = thin_status,
.iterate_devices = thin_iterate_devices,
.io_hints = thin_io_hints,
};
/*----------------------------------------------------------------*/

6
drivers/md/dm.c
View File

@ -1188,6 +1188,7 @@ static int __clone_and_map_changing_extent_only(struct clone_info *ci,
{
struct dm_target *ti;
sector_t len;
unsigned num_requests;
do {
ti = dm_table_find_target(ci->map, ci->sector);
@ -1200,7 +1201,8 @@ static int __clone_and_map_changing_extent_only(struct clone_info *ci,
* reconfiguration might also have changed that since the
* check was performed.
*/
if (!get_num_requests || !get_num_requests(ti))
num_requests = get_num_requests ? get_num_requests(ti) : 0;
if (!num_requests)
return -EOPNOTSUPP;
if (is_split_required && !is_split_required(ti))
@ -1208,7 +1210,7 @@ static int __clone_and_map_changing_extent_only(struct clone_info *ci,
else
len = min(ci->sector_count, max_io_len(ci->sector, ti));
__issue_target_requests(ci, ti, ti->num_discard_requests, len);
__issue_target_requests(ci, ti, num_requests, len);
ci->sector += len;
} while (ci->sector_count -= len);