linux.git/mm/filemap.c, branch v2.6.25

mm: fix various kernel-doc comments

2008-03-20T01:53:35+00:00

Fix various kernel-doc notation in mm/:

filemap.c: add function short description; convert 2 to kernel-doc
fremap.c: change parameter 'prot' to @prot
pagewalk.c: change "-" in function parameters to ":"
slab.c: fix short description of kmem_ptr_validate()
swap.c: fix description & parameters of put_pages_list()
swap_state.c: fix function parameters
vmalloc.c: change "@returns" to "Returns:" since that is not a parameter

Signed-off-by: Randy Dunlap 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

iov_iter_advance() fix

2008-03-11T01:01:20+00:00

iov_iter_advance() skips over zero-length iovecs, however it does not properly
terminate at the end of the iovec array.  Fix this by checking against
i->count before we skip a zero-length iov.

The bug was reproduced with a test program that continually randomly creates
iovs to writev.  The fix was also verified with the same program and also it
could verify that the correct data was contained in the file after each
writev.

Signed-off-by: Nick Piggin 
Tested-by: "Kevin Coffman" 
Cc: "Alexey Dobriyan" 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Do not include linux/backing-dev.h twice

2008-03-10T05:21:52+00:00

Don't include linux/backing-dev.h twice in mm/filemap.c, it's pointless.

Signed-off-by: Jesper Juhl 
Signed-off-by: Linus Torvalds

remove final fastcall users

2008-02-14T00:21:18+00:00

fastcall always expands to empty, remove it.

Signed-off-by: Harvey Harrison 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kill do_generic_mapping_read

2008-02-08T17:22:39+00:00

do_generic_mapping_read was used by gfs2 for internals reads, but this use
of the interface was rather suboptimal (as was the whole interface) and has
been replaced by an internal helper now.  This patch kills
do_generic_mapping_read and surrounding damage in preparation of additional
cleanups for the buffered read path.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Use pgoff_t instead of unsigned long

2008-02-08T17:22:32+00:00

Convert variables containing page indexes to pgoff_t.

Signed-off-by: Jan Kara 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mem-controller gfp-mask fix

2008-02-07T16:42:19+00:00

Need to strip __GFP_HIGHMEM flag while passing to mem_container_cache_charge().

Signed-off-by: Badari Pulavarty 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

memory controller BUG_ON()

2008-02-07T16:42:19+00:00

Move mem_controller_cache_charge() above radix_tree_preload().
radix_tree_preload() disables preemption, even though the gfp_mask passed
contains __GFP_WAIT, we cannot really do __GFP_WAIT allocations, thus we
hit a BUG_ON() in kmem_cache_alloc().

This patch moves mem_controller_cache_charge() to above radix_tree_preload()
for cache charging.

Signed-off-by: Balbir Singh 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Memory controller: make charging gfp mask aware

2008-02-07T16:42:19+00:00

Nick Piggin pointed out that swap cache and page cache addition routines
could be called from non GFP_KERNEL contexts.  This patch makes the
charging routine aware of the gfp context.  Charging might fail if the
cgroup is over it's limit, in which case a suitable error is returned.

This patch was tested on a Powerpc box.  I am still looking at being able
to test the path, through which allocations happen in non GFP_KERNEL
contexts.

[kamezawa.hiroyu@jp.fujitsu.com: problem with ZONE_MOVABLE]
Signed-off-by: Balbir Singh 
Cc: Pavel Emelianov 
Cc: Paul Menage 
Cc: Peter Zijlstra 
Cc: "Eric W. Biederman" 
Cc: Nick Piggin 
Cc: Kirill Korotaev 
Cc: Herbert Poetzl 
Cc: David Rientjes 
Cc: Vaidyanathan Srinivasan 
Signed-off-by: KAMEZAWA Hiroyuki 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Memory controller: add switch to control what type of pages to limit

2008-02-07T16:42:19+00:00

Choose if we want cached pages to be accounted or not.  By default both are
accounted for.  A new set of tunables are added.

echo -n 1 > mem_control_type

switches the accounting to account for only mapped pages

echo -n 3 > mem_control_type

switches the behaviour back

[bunk@kernel.org: mm/memcontrol.c: clenups]
[akpm@linux-foundation.org: fix sparc32 build]
Signed-off-by: Balbir Singh 
Cc: Pavel Emelianov 
Cc: Paul Menage 
Cc: Peter Zijlstra 
Cc: "Eric W. Biederman" 
Cc: Nick Piggin 
Cc: Kirill Korotaev 
Cc: Herbert Poetzl 
Cc: David Rientjes 
Cc: Vaidyanathan Srinivasan 
Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds