linux/drivers
Nick Piggin b5810039a5 [PATCH] core remove PageReserved
Remove PageReserved() calls from core code by tightening VM_RESERVED
handling in mm/ to cover PageReserved functionality.

PageReserved special casing is removed from get_page and put_page.

All setting and clearing of PageReserved is retained, and it is now flagged
in the page_alloc checks to help ensure we don't introduce any refcount
based freeing of Reserved pages.

MAP_PRIVATE, PROT_WRITE of VM_RESERVED regions is tentatively being
deprecated.  We never completely handled it correctly anyway, and is be
reintroduced in future if required (Hugh has a proof of concept).

Once PageReserved() calls are removed from kernel/power/swsusp.c, and all
arch/ and driver code, the Set and Clear calls, and the PG_reserved bit can
be trivially removed.

Last real user of PageReserved is swsusp, which uses PageReserved to
determine whether a struct page points to valid memory or not.  This still
needs to be addressed (a generic page_is_ram() should work).

A last caveat: the ZERO_PAGE is now refcounted and managed with rmap (and
thus mapcounted and count towards shared rss).  These writes to the struct
page could cause excessive cacheline bouncing on big systems.  There are a
number of ways this could be addressed if it is an issue.

Signed-off-by: Nick Piggin <npiggin@suse.de>

Refcount bug fix for filemap_xip.c

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-29 21:40:39 -07:00
..
acorn [ARM] Fix pcf8583 to build 2005-09-20 21:01:13 +01:00
acpi [PATCH] `unaligned access' in acpi get_root_bridge_busnr() 2005-10-19 23:04:31 -07:00
atm [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
base [PATCH] USB: fix pm patches with CONFIG_PM off part 2 2005-10-28 16:47:52 -07:00
block [PATCH] blk: fix merge bug in as-iosched 2005-10-29 10:28:13 -07:00
bluetooth [Bluetooth] Ignore additional interfaces of BPA 100/105 devices 2005-10-28 19:20:57 +02:00
cdrom [PATCH] drivers/cdrom: fix-up schedule_timeout() usage 2005-09-10 10:06:38 -07:00
char qtronix.c: Handle kmalloc failure. 2005-10-29 19:30:55 +01:00
connector [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
cpufreq [PATCH] cpufreq: SMP fix for conservative governor 2005-10-27 16:29:24 -07:00
crypto
dio
eisa
fc4
firmware [PATCH] dell_rbu: changes in packet update mechanism 2005-10-11 09:46:53 -07:00
hwmon [PATCH] hwmon: smsc47m1 documentation update 2005-10-28 14:02:14 -07:00
i2c [PATCH] I2C: remove devfs support from i2c-dev driver 2005-10-28 14:02:14 -07:00
ide Cleaned up AMD Au1200 IDE driver: 2005-10-29 19:32:20 +01:00
ieee1394 Merge ../bleed-2.6 2005-10-28 10:13:16 -07:00
infiniband [PATCH] missing include in infiniband 2005-10-29 10:35:07 -07:00
input [PATCH] amikbd fix 2005-10-29 10:35:07 -07:00
isdn [PATCH] Driver Core: fix up all callers of class_device_create() 2005-10-28 09:52:52 -07:00
macintosh [PATCH] Input: convert drivers/macintosh to dynamic input_dev allocation 2005-10-28 09:52:53 -07:00
mca
md [PATCH] gfp_t: remaining bits of drivers/* 2005-10-28 08:16:51 -07:00
media Let it compile again after i2c algo id removal. Sort headers. 2005-10-29 19:32:27 +01:00
message [PATCH] Driver Core: fix up all callers of class_device_create() 2005-10-28 09:52:52 -07:00
mfd [PATCH] DRIVER MODEL: Get rid of the obsolete tri-level suspend/resume callbacks 2005-10-28 09:52:56 -07:00
misc [PATCH] hdpu_cpustate.c: misc_register() can fail 2005-09-10 10:06:25 -07:00
mmc Au1[12]00 mmc driver. Only tested on the Au1200 at this point though 2005-10-29 19:32:26 +01:00
mtd [ARM] Fix Assabet reboot with SA1100 MTD map driver 2005-10-29 16:14:08 +01:00
net [PATCH] prism54: Free skb after disabling interrupts 2005-10-29 14:17:05 -04:00
nubus
oprofile
parisc Auto-update from upstream 2005-10-28 12:18:07 -04:00
parport [PARISC] Convert parisc_device to use struct resource for hpa 2005-10-21 22:36:40 -04:00
pci [PATCH] USB: move handoff code 2005-10-28 16:47:38 -07:00
pcmcia Updated pcmcia driver with pb1200 and db1200 support. 2005-10-29 19:32:24 +01:00
pnp Merge linux-2.6 with linux-acpi-2.6 2005-09-08 01:45:47 -04:00
s390 [PATCH] arguments out of order in class_device_create() call (s390) 2005-10-29 10:35:07 -07:00
sbus [PATCH] Remove unnecessary check_region references in comments 2005-09-13 08:22:29 -07:00
scsi [PATCH] core remove PageReserved 2005-10-29 21:40:39 -07:00
serial Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6 2005-10-28 13:09:47 -07:00
sh
sn
tc Use physical addresses at the interface level, letting drivers remap 2005-10-29 19:31:35 +01:00
telephony [PATCH] telephony: fix-up schedule_timeout() usage 2005-09-10 10:06:39 -07:00
usb [PATCH] idmouse cleanup and overflow fix 2005-10-29 10:35:08 -07:00
video Fix build error caused by missmatching duplicate declaration. 2005-10-29 19:32:31 +01:00
w1 [PATCH] Dallas's 1-wire bus compile error 2005-10-14 17:10:13 -07:00
zorro
Kconfig [NET]: Add netlink connector. 2005-09-11 19:15:07 -07:00
Makefile [PATCH] USB: move handoff code 2005-10-28 16:47:38 -07:00