linux/Documentation/vm
Dave Hansen 57ea8171d2 mm: documentation: remove hopelessly out-of-date locking doc
Documentation/vm/locking is a blast from the past.  In the entire git
history, it has had precisely Three modifications.  Two of those look to
be pure renames, and the third was from 2005.

The doc contains such gems as:

> The page_table_lock is grabbed while holding the
> kernel_lock spinning monitor.

> Page stealers hold kernel_lock to protect against a bunch of
> races.

Or this which talks about mmap_sem:

> 4. The exception to this rule is expand_stack, which just
>    takes the read lock and the page_table_lock, this is ok
>    because it doesn't really modify fields anybody relies on.

expand_stack() doesn't take any locks any more directly, and the
mmap_sem acquisition was long ago moved up in to the page fault code
itself.

It could be argued that we need to rewrite this, but it is dangerous to
leave it as-is.  It will confuse more people than it helps.

Signed-off-by: Dave Hansen <dave.hansen@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-01-23 16:36:50 -08:00
..
.gitignore
00-INDEX mm: update 00-INDEX 2013-10-14 15:52:20 +02:00
active_mm.txt
balance
cleancache.txt Cleanups: rename of flush to invalidate, moving reporting of statistics 2012-03-22 19:52:47 -07:00
frontswap.txt doc: fix quite a few typos within Documentation 2012-11-19 14:28:24 +01:00
highmem.txt
hugetlbpage.txt hugepage: mention libhugetlbfs in doc 2013-09-11 15:57:39 -07:00
hwpoison.txt
ksm.txt ksm: add some comments 2013-02-23 17:50:23 -08:00
numa
numa_memory_policy.txt
overcommit-accounting mm: add overcommit_kbytes sysctl variable 2014-01-21 16:19:44 -08:00
page_migration
pagemap.txt Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-07-04 11:40:58 -07:00
slub.txt Documentations: Fix slabinfo.c directory in vm/slub.txt 2012-05-10 11:45:23 +03:00
soft-dirty.txt mm: track vma changes with VM_SOFTDIRTY bit 2013-09-11 15:57:56 -07:00
split_page_table_lock x86, mm: do not leak page->ptl for pmd page tables 2013-11-21 16:42:28 -08:00
transhuge.txt mm/thp: fix doc for transparent huge zero page 2013-07-09 10:33:23 -07:00
unevictable-lru.txt mm: remove vma arg from page_evictable 2012-10-09 16:22:55 +09:00
zswap.txt Documentation/vm/zswap.txt: fix typos 2013-11-13 12:09:05 +09:00