linux/drivers/nvdimm
Michal Hocko 752ade68cb treewide: use kv[mz]alloc* rather than opencoded variants
There are many code paths opencoding kvmalloc.  Let's use the helper
instead.  The main difference to kvmalloc is that those users are
usually not considering all the aspects of the memory allocator.  E.g.
allocation requests <= 32kB (with 4kB pages) are basically never failing
and invoke OOM killer to satisfy the allocation.  This sounds too
disruptive for something that has a reasonable fallback - the vmalloc.
On the other hand those requests might fallback to vmalloc even when the
memory allocator would succeed after several more reclaim/compaction
attempts previously.  There is no guarantee something like that happens
though.

This patch converts many of those places to kv[mz]alloc* helpers because
they are more conservative.

Link: http://lkml.kernel.org/r/20170306103327.2766-2-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> # Xen bits
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Andreas Dilger <andreas.dilger@intel.com> # Lustre
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> # KVM/s390
Acked-by: Dan Williams <dan.j.williams@intel.com> # nvdim
Acked-by: David Sterba <dsterba@suse.com> # btrfs
Acked-by: Ilya Dryomov <idryomov@gmail.com> # Ceph
Acked-by: Tariq Toukan <tariqt@mellanox.com> # mlx4
Acked-by: Leon Romanovsky <leonro@mellanox.com> # mlx5
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Santosh Raspatur <santosh@chelsio.com>
Cc: Hariprasad S <hariprasad@chelsio.com>
Cc: Yishai Hadas <yishaih@mellanox.com>
Cc: Oleg Drokin <oleg.drokin@intel.com>
Cc: "Yan, Zheng" <zyan@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Miller <davem@davemloft.net>
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
..
blk.c libnvdimm for 4.8 2016-07-28 17:38:16 -07:00
btt_devs.c libnvdimm: fix nvdimm_bus_lock() vs device_lock() ordering 2017-05-01 08:29:37 -07:00
btt.c nvdimm, btt: add a size attribute for BTTs 2016-08-08 09:26:14 -07:00
btt.h libnvdimm, btt: consolidate arena validation 2015-08-14 13:43:04 -04:00
bus.c libnvdimm: rework region badblocks clearing 2017-04-29 15:24:03 -07:00
claim.c Merge branch 'for-4.12/dax' into libnvdimm-for-next 2017-05-04 23:38:43 -07:00
core.c libnvdimm: fix clear poison locking with spinlock and GFP_NOWAIT allocation 2017-04-13 14:23:51 -07:00
dax_devs.c libnvdimm: fix nvdimm_bus_lock() vs device_lock() ordering 2017-05-01 08:29:37 -07:00
dimm_devs.c treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
dimm.c libnvdimm: handle locked label storage areas 2017-05-04 15:41:39 -07:00
e820.c libnvdimm, e820: use module_platform_driver 2016-12-05 08:52:21 -08:00
Kconfig pmem: add dax_operations support 2017-04-19 15:14:35 -07:00
label.c nvdimm: use the right length of "pmem" 2016-11-11 20:37:42 -08:00
label.h libnvdimm: write blk label set 2015-06-24 21:24:10 -04:00
Makefile libnvdimm, dax: introduce device-dax infrastructure 2016-05-09 15:35:42 -07:00
namespace_devs.c libnvdimm: handle locked label storage areas 2017-05-04 15:41:39 -07:00
nd-core.h libnvdimm: fix clear poison locking with spinlock and GFP_NOWAIT allocation 2017-04-13 14:23:51 -07:00
nd.h libnvdimm: convert NDD_ flags to use bitops, introduce NDD_LOCKED 2017-05-04 14:01:24 -07:00
pfn_devs.c libnvdimm, pfn: fix 'npfns' vs section alignment 2017-05-04 19:54:42 -07:00
pfn.h libnvdimm, dax: autodetect support 2016-05-20 22:02:57 -07:00
pmem.c libnvdimm for 4.12 2017-05-05 18:49:20 -07:00
pmem.h pmem: add dax_operations support 2017-04-19 15:14:35 -07:00
region_devs.c libnvdimm: convert NDD_ flags to use bitops, introduce NDD_LOCKED 2017-05-04 14:01:24 -07:00
region.c libnvdimm: rework region badblocks clearing 2017-04-29 15:24:03 -07:00