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Linus Torvalds 097d59106a vm: avoid using find_vma_prev() unnecessarily ...

Several users of "find_vma_prev()" were not in fact interested in the
previous vma if there was no primary vma to be found either.  And in
those cases, we're much better off just using the regular "find_vma()",
and then "prev" can be looked up by just checking vma->vm_prev.

The find_vma_prev() semantics are fairly subtle (see Mikulas' recent
commit 83cd904d27: "mm: fix find_vma_prev"), and the whole "return
prev by reference" means that it generates worse code too.

Thus this "let's avoid using this inconvenient and clearly too subtle
interface when we don't really have to" patch.

Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2012-03-06 18:23:36 -08:00

..

backing-dev.c

backing-dev: fix wakeup timer races with bdi_unregister()

2012-02-01 16:52:49 +08:00

bootmem.c

mm: bootmem: try harder to free pages in bulk

2012-01-10 16:30:45 -08:00

bounce.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

cleancache.c

mm: cleancache core ops functions and config

2011-05-26 10:01:36 -06:00

compaction.c

mm: compaction: check for overlapping nodes during isolation for migration

2012-02-08 19:03:51 -08:00

debug-pagealloc.c

mm, x86: Remove debug_pagealloc_enabled

2011-12-06 09:24:07 +01:00

dmapool.c

mm: fix implicit stat.h usage in dmapool.c

2011-10-31 09:20:12 -04:00

fadvise.c

fadvise: only initiate writeback for specified range with FADV_DONTNEED

2012-01-10 16:30:43 -08:00

failslab.c

switch debugfs to umode_t

2012-01-03 22:54:56 -05:00

filemap_xip.c

mm/filemap_xip.c: fix race condition in xip_file_fault()

2012-02-03 16:16:41 -08:00

filemap.c

readahead: fix pipeline break caused by block plug

2012-02-03 16:16:41 -08:00

fremap.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

highmem.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

huge_memory.c

mm: thp: fix BUG on mm->nr_ptes

2012-03-05 15:49:43 -08:00

hugetlb.c

flush_tlb_range() needs ->page_table_lock when ->mmap_sem is not held

2012-03-05 13:51:32 -08:00

hwpoison-inject.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

init-mm.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

internal.h

mm: thp: tail page refcounting fix

2011-11-02 16:06:57 -07:00

Kconfig

Merge branch 'master' into x86/memblock

2011-11-28 09:46:22 -08:00

Kconfig.debug

mm: more intensive memory corruption debugging

2012-01-10 16:30:42 -08:00

kmemcheck.c

kmemcheck: Fix build errors due to missing slab.h

2010-03-30 22:02:32 +09:00

kmemleak-test.c

kmemleak: remove memset by using kzalloc

2011-01-27 18:31:51 +00:00

kmemleak.c

kmemleak: Disable early logging when kmemleak is off by default

2012-01-20 16:57:05 +00:00

ksm.c

memcg: fix GPF when cgroup removal races with last exit

2012-03-05 15:49:43 -08:00

maccess.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

madvise.c

fs: kill i_alloc_sem

2011-07-20 20:47:46 -04:00

Makefile

Cross Memory Attach

2011-10-31 17:30:44 -07:00

memblock.c

memblock: Fix size aligning of memblock_alloc_base_nid()

2012-03-01 10:53:18 +01:00

memcontrol.c

memcg: fix mapcount check in move charge code for anonymous page

2012-03-05 15:49:43 -08:00

memory_hotplug.c

mm: compaction: introduce sync-light migration for use by compaction

2012-01-12 20:13:09 -08:00

memory-failure.c

mm: compaction: introduce sync-light migration for use by compaction

2012-01-12 20:13:09 -08:00

memory.c

mm: fix rss count leakage during migration

2012-01-23 08:38:49 -08:00

mempolicy.c

vm: avoid using find_vma_prev() unnecessarily

2012-03-06 18:23:36 -08:00

mempool.c

mempool: fix first round failure behavior

2012-01-10 16:30:45 -08:00

migrate.c

memcg: fix GPF when cgroup removal races with last exit

2012-03-05 15:49:43 -08:00

mincore.c

mm: clarify the radix_tree exceptional cases

2011-08-03 14:25:24 -10:00

mlock.c

vm: avoid using find_vma_prev() unnecessarily

2012-03-06 18:23:36 -08:00

mm_init.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mmap.c

mm: fix find_vma_prev

2012-03-06 16:48:03 -08:00

mmu_context.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mmu_notifier.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mmzone.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

mprotect.c

vm: avoid using find_vma_prev() unnecessarily

2012-03-06 18:23:36 -08:00

mremap.c

mremap: enforce rmap src/dst vma ordering in case of vma_merge() succeeding in copy_vma()

2012-01-10 16:30:44 -08:00

msync.c

sanitize vfs_fsync calling conventions

2010-05-21 18:31:21 -04:00

nobootmem.c

Merge branch 'master' into x86/memblock

2011-11-28 09:46:22 -08:00

nommu.c

NOMMU: Don't need to clear vm_mm when deleting a VMA

2012-02-24 08:59:04 -08:00

oom_kill.c

mm: unify remaining mem_cont, mem, etc. variable names to memcg

2012-01-12 20:13:06 -08:00

page_alloc.c

vfs: fix panic in __d_lookup() with high dentry hashtable counts

2012-02-13 20:45:38 -05:00

page_cgroup.c

page_cgroup: fix horrid swap accounting regression

2012-03-06 08:18:23 -08:00

page_io.c

block: kill off REQ_UNPLUG

2011-03-10 08:52:27 +01:00

page_isolation.c

mm: page_isolation: codeclean fix comment and rm unneeded val init

2010-10-26 16:52:11 -07:00

page-writeback.c

Merge branch 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux

2012-01-10 16:59:59 -08:00

pagewalk.c

pagewalk: fix code comment for THP

2011-07-25 20:57:09 -07:00

percpu-km.c

percpu: clear memory allocated with the km allocator

2010-10-02 10:28:42 +03:00

percpu-vm.c

percpu: use bitmap_clear

2012-01-20 09:23:16 -08:00

percpu.c

Merge tag 'kmemleak' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux

2012-01-14 18:11:11 -08:00

pgtable-generic.c

mm/pgtable-generic.c: fix CONFIG_SWAP=n build

2011-01-26 10:49:58 +10:00

prio_tree.c

sanitize <linux/prefetch.h> usage

2011-05-20 12:50:29 -07:00

process_vm_access.c

Fix race in process_vm_rw_core

2012-02-02 12:55:17 -08:00

quicklist.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

readahead.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rmap.c

mm: unify remaining mem_cont, mem, etc. variable names to memcg

2012-01-12 20:13:06 -08:00

shmem.c

SHM_UNLOCK: fix Unevictable pages stranded after swap

2012-01-23 08:38:48 -08:00

slab.c

Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux

2012-01-11 18:52:23 -08:00

slob.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

slub.c

mm,x86,um: move CMPXCHG_DOUBLE config option

2012-01-12 20:13:03 -08:00

sparse-vmemmap.c

mm: delete various needless include <linux/module.h>

2011-10-31 09:20:11 -04:00

sparse.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

swap_state.c

memcg: fix GPF when cgroup removal races with last exit

2012-03-05 15:49:43 -08:00

swap.c

memcg: fix GPF when cgroup removal races with last exit

2012-03-05 15:49:43 -08:00

swapfile.c

mm: unify remaining mem_cont, mem, etc. variable names to memcg

2012-01-12 20:13:06 -08:00

thrash.c

mm/thrash.c: quiet sparse noise

2011-10-31 17:30:50 -07:00

truncate.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

util.c

mm: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

vmalloc.c

mm/vmalloc.c: eliminate extra loop in pcpu_get_vm_areas error path

2012-01-12 20:13:10 -08:00

vmscan.c

SHM_UNLOCK: fix Unevictable pages stranded after swap

2012-01-23 08:38:48 -08:00

vmstat.c

mm,x86,um: move CMPXCHG_LOCAL config option

2012-01-12 20:13:03 -08:00