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3f0e131221
linux_dsm_epyc7002/mm
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Dan Streetman 3f0e131221 zpool: add zpool_has_pool() 
This series makes creation of the zpool and compressor dynamic, so that
they can be changed at runtime.  This makes using/configuring zswap
easier, as before this zswap had to be configured at boot time, using boot
params.

This uses a single list to track both the zpool and compressor together,
although Seth had mentioned an alternative which is to track the zpools
and compressors using separate lists.  In the most common case, only a
single zpool and single compressor, using one list is slightly simpler
than using two lists, and for the uncommon case of multiple zpools and/or
compressors, using one list is slightly less simple (and uses slightly
more memory, probably) than using two lists.

This patch (of 4):

Add zpool_has_pool() function, indicating if the specified type of zpool
is available (i.e.  zsmalloc or zbud).  This allows checking if a pool is
available, without actually trying to allocate it, similar to
crypto_has_alg().

This is used by a following patch to zswap that enables the dynamic
runtime creation of zswap zpools.

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Acked-by: Seth Jennings <sjennings@variantweb.net>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-09-10 13:29:01 -07:00
..
kasan x86/kasan, mm: Introduce generic kasan_populate_zero_shadow() 2015-08-22 14:54:55 +02:00
backing-dev.c inode: rename i_wb_list to i_io_list 2015-08-17 23:38:10 -04:00
balloon_compaction.c mm/balloon_compaction: fix deflation when compaction is disabled 2014-10-29 16:33:15 -07:00
bootmem.c bootmem: avoid freeing to bootmem after bootmem is done 2015-09-08 15:35:28 -07:00
cleancache.c cleancache: remove limit on the number of cleancache enabled filesystems 2015-04-14 16:49:03 -07:00
cma_debug.c mm/cma_debug: correct size input to bitmap function 2015-07-17 16:39:54 -07:00
cma.c mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute 2015-06-24 17:49:44 -07:00
cma.h mm: cma: mark cma_bitmap_maxno() inline in header 2015-08-14 15:56:32 -07:00
compaction.c mm/compaction: correct to flush migrated pages if pageblock skip happens 2015-09-08 15:35:28 -07:00
debug-pagealloc.c mm/debug-pagealloc: make debug-pagealloc boottime configurable 2014-12-13 12:42:48 -08:00
debug.c tracing: Rename ftrace_event.h to trace_events.h 2015-05-13 14:05:12 -04:00
dmapool.c mm: add support for __GFP_ZERO flag to dma_pool_alloc() 2015-09-08 15:35:28 -07:00
early_ioremap.c Merge branch 'akpm' (patches from Andrew) 2015-09-08 17:52:23 -07:00
fadvise.c writeback: implement and use inode_congested() 2015-06-02 08:33:35 -06:00
failslab.c
filemap.c mm: rename alloc_pages_exact_node() to __alloc_pages_node() 2015-09-08 15:35:28 -07:00
frontswap.c frontswap: allow multiple backends 2015-06-24 17:49:45 -07:00
gup.c mm: make GUP handle pfn mapping unless FOLL_GET is requested 2015-09-04 16:54:41 -07:00
highmem.c mm/highmem: make kmap cache coloring aware 2014-08-06 18:01:22 -07:00
huge_memory.c mm/khugepaged: allow interruption of allocation sleep again 2015-09-08 15:35:28 -07:00
hugetlb_cgroup.c mm: page_counter: pull "-1" handling out of page_counter_memparse() 2015-02-11 17:06:02 -08:00
hugetlb.c mm: rename alloc_pages_exact_node() to __alloc_pages_node() 2015-09-08 15:35:28 -07:00
hwpoison-inject.c mm/hwpoison: fix refcount of THP head page in no-injection case 2015-09-08 15:35:28 -07:00
init-mm.c
internal.h mm/compaction: correct to flush migrated pages if pageblock skip happens 2015-09-08 15:35:28 -07:00
interval_tree.c mm: replace vma->sharead.linear with vma->shared 2015-02-10 14:30:31 -08:00
Kconfig libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
Kconfig.debug mm/debug_pagealloc: remove obsolete Kconfig options 2015-01-08 15:10:52 -08:00
kmemcheck.c mm/slab_common: move kmem_cache definition to internal header 2014-10-09 22:25:50 -04:00
kmemleak-test.c mm/kmemleak-test.c: use pr_fmt for logging 2014-06-06 16:08:18 -07:00
kmemleak.c kmemleak: record accurate early log buffer count and report when exceeded 2015-09-08 15:35:28 -07:00
ksm.c mm: remove rest of ACCESS_ONCE() usages 2015-04-15 16:35:18 -07:00
list_lru.c list_lru: don't call list_lru_from_kmem if the list_head is empty 2015-09-08 15:35:28 -07:00
maccess.c lib: move strncpy_from_unsafe() into mm/maccess.c 2015-08-31 12:36:10 -07:00
madvise.c mm: madvise allow remove operation for hugetlbfs 2015-09-08 15:35:28 -07:00
Makefile userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation 2015-09-04 16:54:41 -07:00
memblock.c mm/memblock.c: fix comment in __next_mem_range() 2015-09-08 15:35:28 -07:00
memcontrol.c memcg: move memcg_proto_active from sock.h 2015-09-08 15:35:28 -07:00
memory_hotplug.c libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
memory-failure.c mm: rename alloc_pages_exact_node() to __alloc_pages_node() 2015-09-08 15:35:28 -07:00
memory.c mm, dax: use i_mmap_unlock_write() in do_cow_fault() 2015-09-08 15:35:28 -07:00
mempolicy.c mm: rename alloc_pages_exact_node() to __alloc_pages_node() 2015-09-08 15:35:28 -07:00
mempool.c mm/mempool: allow NULL `pool' pointer in mempool_destroy() 2015-09-08 15:35:28 -07:00
memtest.c memtest: remove unused header files 2015-09-08 15:35:28 -07:00
migrate.c mm: rename alloc_pages_exact_node() to __alloc_pages_node() 2015-09-08 15:35:28 -07:00
mincore.c mincore: apply page table walker on do_mincore() 2015-02-11 17:06:06 -08:00
mlock.c userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx 2015-09-04 16:54:41 -07:00
mm_init.c mm: meminit: remove mminit_verify_page_links 2015-06-30 19:44:56 -07:00
mmap.c mm/mmap.c:insert_vm_struct(): check for failure before setting values 2015-09-08 15:35:28 -07:00
mmu_context.c sched/mm: call finish_arch_post_lock_switch in idle_task_exit and use_mm 2014-02-21 08:50:17 +01:00
mmu_notifier.c mmu_notifier: add the callback for mmu_notifier_invalidate_range() 2014-11-13 13:46:09 +11:00
mmzone.c mm: microoptimize zonelist operations 2015-02-11 17:06:02 -08:00
mprotect.c userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx 2015-09-04 16:54:41 -07:00
mremap.c mremap: simplify the "overlap" check in mremap_to() 2015-09-04 16:54:41 -07:00
msync.c mm: remove rest usage of VM_NONLINEAR and pte_file() 2015-02-10 14:30:31 -08:00
nobootmem.c mm: page_alloc: pass PFN to __free_pages_bootmem 2015-06-30 19:44:55 -07:00
nommu.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-09-01 18:46:42 -07:00
oom_kill.c mm, oom: remove unnecessary variable 2015-09-08 15:35:28 -07:00
page_alloc.c Merge branch 'akpm' (patches from Andrew) 2015-09-08 17:52:23 -07:00
page_counter.c mm: page_counter: pull "-1" handling out of page_counter_memparse() 2015-02-11 17:06:02 -08:00
page_ext.c mm/page_owner: keep track of page owners 2014-12-13 12:42:48 -08:00
page_io.c fs: use helper bio_add_page() instead of open coding on bi_io_vec 2015-08-13 12:32:00 -06:00
page_isolation.c mm, page_isolation: make set/unset_migratetype_isolate() file-local 2015-09-08 15:35:28 -07:00
page_owner.c mm/page_owner: set correct gfp_mask on page_owner 2015-07-17 16:39:54 -07:00
page-writeback.c writeback: fix initial dirty limit 2015-08-07 04:39:42 +03:00
pagewalk.c mm/pagewalk.c: prevent positive return value of walk_page_test() from being passed to callers 2015-03-25 16:20:30 -07:00
percpu-km.c percpu: implmeent pcpu_nr_empty_pop_pages and chunk->nr_populated 2014-09-02 14:46:05 -04:00
percpu-vm.c percpu: move region iterations out of pcpu_[de]populate_chunk() 2014-09-02 14:46:02 -04:00
percpu.c percpu: clean up of schunk->map[] assignment in pcpu_setup_first_chunk 2015-07-21 11:31:00 -04:00
pgtable-generic.c mm: clarify that the function operates on hugepage pte 2015-06-24 17:49:44 -07:00
process_vm_access.c process_vm_access: switch to {compat_,}import_iovec() 2015-04-11 22:27:12 -04:00
quicklist.c
readahead.c writeback: implement and use inode_congested() 2015-06-02 08:33:35 -06:00
rmap.c mm: defer flush of writable TLB entries 2015-09-04 16:54:41 -07:00
shmem.c shmem: recalculate file inode when fstat 2015-09-08 15:35:28 -07:00
slab_common.c memcg: export struct mem_cgroup 2015-09-08 15:35:28 -07:00
slab.c mm: rename alloc_pages_exact_node() to __alloc_pages_node() 2015-09-08 15:35:28 -07:00
slab.h mm/slab.h: fix argument order in cache_from_obj's error message 2015-09-04 16:54:41 -07:00
slob.c mm: rename alloc_pages_exact_node() to __alloc_pages_node() 2015-09-08 15:35:28 -07:00
slub.c mm: rename alloc_pages_exact_node() to __alloc_pages_node() 2015-09-08 15:35:28 -07:00
sparse-vmemmap.c mm/sparse: use memblock apis for early memory allocations 2014-01-21 16:19:47 -08:00
sparse.c mm: use macros from compiler.h instead of __attribute__((...)) 2014-04-07 16:35:54 -07:00
swap_cgroup.c mm: page_cgroup: rename file to mm/swap_cgroup.c 2014-12-10 17:41:09 -08:00
swap_state.c mm: swap: zswap: maybe_preload & refactoring 2015-09-08 15:35:28 -07:00
swap.c mm: drop bogus VM_BUG_ON_PAGE assert in put_page() codepath 2015-06-24 17:49:42 -07:00
swapfile.c mm: /proc/pid/smaps:: show proportional swap share of the mapping 2015-09-08 15:35:28 -07:00
truncate.c memcg: add per cgroup dirty page accounting 2015-06-02 08:33:33 -06:00
userfaultfd.c userfaultfd: avoid mmap_sem read recursion in mcopy_atomic 2015-09-04 16:54:41 -07:00
util.c mm: uninline and cleanup page-mapping related helpers 2015-04-15 16:35:19 -07:00
vmacache.c mm,vmacache: count number of system-wide flushes 2014-12-13 12:42:48 -08:00
vmalloc.c mm/vmalloc: get rid of dirty bitmap inside vmap_block structure 2015-04-15 16:35:18 -07:00
vmpressure.c mm/vmpressure.c: fix race in vmpressure_work_fn() 2014-12-02 17:32:07 -08:00
vmscan.c mm, vmscan: unlock page while waiting on writeback 2015-09-08 15:35:28 -07:00
vmstat.c vmstat: Reduce time interval to stat update on idle cpu 2015-02-11 17:06:07 -08:00
workingset.c list_lru: add helpers to isolate items 2015-02-12 18:54:10 -08:00
zbud.c mm: zbud: constify the zbud_ops 2015-09-08 15:35:28 -07:00
zpool.c zpool: add zpool_has_pool() 2015-09-10 13:29:01 -07:00
zsmalloc.c mm: zpool: constify the zpool_ops 2015-09-08 15:35:28 -07:00
zswap.c mm: zpool: constify the zpool_ops 2015-09-08 15:35:28 -07:00