dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity
This repository has been archived on 2022-02-17. You can view files and clone it, but cannot push or open issues or pull requests.
linux-2.6/mm
History
Eric Dumazet 1037b83bd0 MM: alloc_large_system_hash() can free some memory for non power-of-two bucketsize 
alloc_large_system_hash() is called at boot time to allocate space for
several large hash tables.

Lately, TCP hash table was changed and its bucketsize is not a power-of-two
anymore.

On most setups, alloc_large_system_hash() allocates one big page (order >
0) with __get_free_pages(GFP_ATOMIC, order).  This single high_order page
has a power-of-two size, bigger than the needed size.

We can free all pages that wont be used by the hash table.

On a 1GB i386 machine, this patch saves 128 KB of LOWMEM memory.

TCP established hash table entries: 32768 (order: 6, 393216 bytes)

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2007-07-16 09:05:35 -07:00
..
Kconfig sh64: generic quicklist support. 2007-05-14 09:55:35 +09:00
Makefile Quicklists for page table pages 2007-05-07 12:12:54 -07:00
allocpercpu.c [PATCH] Allow NULL pointers in percpu_free 2006-12-07 08:39:22 -08:00
backing-dev.c [PATCH] nfs: fix congestion control 2007-03-16 19:25:05 -07:00
bootmem.c [PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols 2006-12-07 08:39:44 -08:00
bounce.c block: blk_max_pfn is somtimes wrong 2007-03-27 08:52:47 +02:00
fadvise.c [PATCH] mm: change uses of f_{dentry,vfsmnt} to use f_path 2006-12-08 08:28:43 -08:00
filemap.c sendfile: kill generic_file_sendfile() 2007-07-10 08:04:14 +02:00
filemap.h Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
filemap_xip.c xip sendfile removal 2007-07-10 08:04:15 +02:00
fremap.c [PATCH] mm: more rmap debugging 2006-12-22 08:55:49 -08:00
highmem.c [PATCH] i386: PARAVIRT: add kmap_atomic_pte for mapping highpte pages 2007-05-02 19:27:15 +02:00
hugetlb.c hugetlb: remove unnecessary nid initialization 2007-07-16 09:05:35 -07:00
internal.h Make page->private usable in compound pages 2007-05-07 12:12:53 -07:00
madvise.c Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
memory.c MM: use DIV_ROUND_UP() in mm/memory.c 2007-07-16 09:05:35 -07:00
memory_hotplug.c memory hotplug: fix unnecessary calling of init_currenty_empty_zone() 2007-06-01 08:18:29 -07:00
mempolicy.c [PATCH] Page migration: Fix vma flag checking 2007-03-05 07:57:51 -08:00
mempool.c [PATCH] Numerous fixes to kernel-doc info in source files. 2007-02-11 10:51:32 -08:00
migrate.c page migration: fix NR_FILE_PAGES accounting 2007-04-24 08:23:08 -07:00
mincore.c [PATCH] mincore: vma crossing fix 2007-02-15 09:57:03 -08:00
mlock.c Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
mmap.c security: Protection for exploiting null dereference using mmap 2007-07-11 22:52:29 -04:00
mmzone.c [PATCH] remove EXPORT_UNUSED_SYMBOL'ed symbols 2006-12-07 08:39:44 -08:00
mprotect.c [PATCH] paravirt: lazy mmu mode hooks.patch 2006-10-01 00:39:33 -07:00
mremap.c security: Protection for exploiting null dereference using mmap 2007-07-11 22:52:29 -04:00
msync.c Detach sched.h from mm.h 2007-05-21 09:18:19 -07:00
nommu.c security: Protection for exploiting null dereference using mmap 2007-07-11 22:52:29 -04:00
oom_kill.c oom: fix constraint deadlock 2007-05-07 12:12:55 -07:00
page-writeback.c consolidate generic_writepages and mpage_writepages 2007-05-11 08:29:35 -07:00
page_alloc.c MM: alloc_large_system_hash() can free some memory for non power-of-two bucketsize 2007-07-16 09:05:35 -07:00
page_io.c [PATCH] swsusp: use block device offsets to identify swap locations 2006-12-07 08:39:27 -08:00
pdflush.c [PATCH] Add include/linux/freezer.h and move definitions from sched.h 2006-12-07 08:39:27 -08:00
prio_tree.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
quicklist.c Quicklists for page table pages 2007-05-07 12:12:54 -07:00
readahead.c readahead: code cleanup 2007-05-07 12:12:52 -07:00
rmap.c mm: kill validate_anon_vma to avoid mapcount BUG 2007-06-28 11:34:53 -07:00
shmem.c shmem: convert to using splice instead of sendfile() 2007-07-10 08:04:15 +02:00
shmem_acl.c [PATCH] Fix typos in mm/shmem_acl.c 2006-10-11 11:14:23 -07:00
slab.c Make /proc/slabinfo use seq_list_xxx helpers 2007-07-16 09:05:35 -07:00
slob.c Remove SLAB_CTOR_CONSTRUCTOR 2007-05-17 05:23:04 -07:00
slub.c slub: remove useless EXPORT_SYMBOL 2007-07-06 11:45:11 -07:00
sparse.c Move three functions that are only needed for CONFIG_MEMORY_HOTPLUG 2007-06-08 17:23:33 -07:00
swap.c Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
swap_state.c [PATCH] lockdep: locking init debugging improvement 2006-07-03 15:27:02 -07:00
swapfile.c mm: make read_cache_page synchronous 2007-05-07 12:12:51 -07:00
thrash.c Bug in mm/thrash.c function grab_swap_token() 2007-05-11 08:29:32 -07:00
tiny-shmem.c [PATCH] mm/{,tiny-}shmem.c cleanups 2007-03-01 14:53:35 -08:00
truncate.c fs: convert core functions to zero_user_page 2007-05-09 12:30:55 -07:00
util.c [PATCH] slab: clean up leak tracking ifdefs a little bit 2006-10-04 07:55:13 -07:00
vmalloc.c Make __vunmap static 2007-05-17 05:23:04 -07:00
vmscan.c Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
vmstat.c mm: fixup /proc/vmstat output 2007-07-06 10:26:50 -07:00