linux-stable/drivers/block/drbd
Michal Hocko 19809c2da2 mm, vmalloc: use __GFP_HIGHMEM implicitly
__vmalloc* allows users to provide gfp flags for the underlying
allocation.  This API is quite popular

  $ git grep "=[[:space:]]__vmalloc\|return[[:space:]]*__vmalloc" | wc -l
  77

The only problem is that many people are not aware that they really want
to give __GFP_HIGHMEM along with other flags because there is really no
reason to consume precious lowmemory on CONFIG_HIGHMEM systems for pages
which are mapped to the kernel vmalloc space.  About half of users don't
use this flag, though.  This signals that we make the API unnecessarily
too complex.

This patch simply uses __GFP_HIGHMEM implicitly when allocating pages to
be mapped to the vmalloc space.  Current users which add __GFP_HIGHMEM
are simplified and drop the flag.

Link: http://lkml.kernel.org/r/20170307141020.29107-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Cristopher Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-08 17:15:13 -07:00
..
drbd_actlog.c block: replace REQ_NOIDLE with REQ_IDLE 2016-11-01 09:43:26 -06:00
drbd_bitmap.c mm, vmalloc: use __GFP_HIGHMEM implicitly 2017-05-08 17:15:13 -07:00
drbd_debugfs.c drbd: make intelligent use of blkdev_issue_zeroout 2017-04-08 11:25:38 -06:00
drbd_debugfs.h drbd: debugfs: add basic hierarchy 2014-07-10 18:35:16 +02:00
drbd_int.h drbd: make intelligent use of blkdev_issue_zeroout 2017-04-08 11:25:38 -06:00
drbd_interval.c drbd: use RB_DECLARE_CALLBACKS() to define augment callbacks 2014-09-18 09:00:17 -06:00
drbd_interval.h drbd: code cleanups without semantic changes 2016-06-13 21:43:07 -06:00
drbd_main.c block: remove the discard_zeroes_data flag 2017-04-08 11:25:38 -06:00
drbd_nl.c block: remove the discard_zeroes_data flag 2017-04-08 11:25:38 -06:00
drbd_nla.c netlink: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -04:00
drbd_nla.h drbd: Split off netlink mandatory attribute handling into separate file 2012-11-08 16:57:45 +01:00
drbd_proc.c block: Use pointer to backing_dev_info from request_queue 2017-02-02 08:20:48 -07:00
drbd_protocol.h drbd: introduce WRITE_SAME support 2016-06-13 21:43:07 -06:00
drbd_receiver.c drbd: implement REQ_OP_WRITE_ZEROES 2017-04-08 11:25:38 -06:00
drbd_req.c drbd: implement REQ_OP_WRITE_ZEROES 2017-04-08 11:25:38 -06:00
drbd_req.h drbd: introduce WRITE_SAME support 2016-06-13 21:43:07 -06:00
drbd_state.c drbd: get rid of empty statement in is_valid_state 2016-06-13 21:43:07 -06:00
drbd_state.h drbd: code cleanups without semantic changes 2016-06-13 21:43:07 -06:00
drbd_state_change.h drbd: Backport the "events2" command 2015-11-25 09:22:00 -07:00
drbd_strings.c drbd: code cleanups without semantic changes 2016-06-13 21:43:07 -06:00
drbd_strings.h drbd: Move string function prototypes from linux/drbd.h to drbd_string.h 2014-02-17 16:50:37 +01:00
drbd_vli.h Fix common misspellings 2011-03-31 11:26:23 -03:00
drbd_worker.c drbd: implement REQ_OP_WRITE_ZEROES 2017-04-08 11:25:38 -06:00
Kconfig drbd: update Kconfig to match current dependencies 2012-12-06 13:08:29 +01:00
Makefile drbd: debugfs: add basic hierarchy 2014-07-10 18:35:16 +02:00