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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>		20 years ago
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oss	[ALSA] Replace with kzalloc() - core stuff	20 years ago
seq	[PATCH] gfp_t: sound	20 years ago
Kconfig	…
Makefile	[PATCH] Kconfig fix (ISA_DMA_API and sound/*)	20 years ago
control.c	…
control_compat.c	…
device.c	[ALSA] Replace with kzalloc() - core stuff	20 years ago
hwdep.c	…
hwdep_compat.c	…
info.c	…
info_oss.c	…
init.c	[PATCH] DRIVER MODEL: Get rid of the obsolete tri-level suspend/resume callbacks	20 years ago
isadma.c	…
memalloc.c	[PATCH] gfp_t: sound	20 years ago
memory.c	[PATCH] gfp flags annotations - part 1	20 years ago
misc.c	…
pcm.c	…
pcm_compat.c	…
pcm_lib.c	…
pcm_memory.c	…
pcm_misc.c	[ALSA] Export missing snd_pcm_format_*()	20 years ago
pcm_native.c	[PATCH] core remove PageReserved	20 years ago
pcm_timer.c	…
rawmidi.c	…
rawmidi_compat.c	…
rtctimer.c	…
sgbuf.c	…
sound.c	[PATCH] Driver Core: fix up all callers of class_device_create()	20 years ago
sound_oss.c	…
timer.c	…
timer_compat.c	…
wrappers.c	[PATCH] gfp flags annotations - part 1	20 years ago