linux/include
Hugh Dickins 0b14c179a4 [PATCH] unpaged: VM_UNPAGED
Although we tend to associate VM_RESERVED with remap_pfn_range, quite a few
drivers set VM_RESERVED on areas which are then populated by nopage.  The
PageReserved removal in 2.6.15-rc1 changed VM_RESERVED not to free pages in
zap_pte_range, without changing those drivers not to set it: so their pages
just leak away.

Let's not change miscellaneous drivers now: introduce VM_UNPAGED at the core,
to flag the special areas where the ptes may have no struct page, or if they
have then it's not to be touched.  Replace most instances of VM_RESERVED in
core mm by VM_UNPAGED.  Force it on in remap_pfn_range, and the sparc and
sparc64 io_remap_pfn_range.

Revert addition of VM_RESERVED to powerpc vdso, it's not needed there.  Is it
needed anywhere?  It still governs the mm->reserved_vm statistic, and special
vmas not to be merged, and areas not to be core dumped; but could probably be
eliminated later (the drivers are probably specifying it because in 2.4 it
kept swapout off the vma, but in 2.6 we work from the LRU, which these pages
don't get on).

Use the VM_SHM slot for VM_UNPAGED, and define VM_SHM to 0: it serves no
purpose whatsoever, and should be removed from drivers when we clean up.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-22 09:13:42 -08:00
..
acpi
asm-alpha [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-arm [ARM] ebsa110: __arch_ioremap should be 3 args 2005-11-21 15:26:52 +00:00
asm-arm26 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-cris [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-frv [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-generic Merge x86-64 update from Andi 2005-11-14 19:56:02 -08:00
asm-h8300 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-i386 x86: Fix silly typo in recent <asm/signal.h> fixes 2005-11-17 10:04:31 -08:00
asm-ia64 [IA64-SGI] support for older versions of PROM 2005-11-21 14:17:28 -08:00
asm-m32r [PATCH] consolidate sys_ptrace() 2005-11-07 07:53:42 -08:00
asm-m68k [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-m68knommu [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-mips [MIPS] SEAD: More build fixes. 2005-11-17 16:23:57 +00:00
asm-parisc [PARISC] Always spinlock tlb flush operations to ensure preempt safety 2005-11-17 16:44:14 -05:00
asm-powerpc powerpc: Merge spinlock.h 2005-11-19 20:50:46 +11:00
asm-ppc Merge branch 'mymerge' of ssh://ozlabs.org/home/sfr/kernel-sfr 2005-11-19 14:25:23 +11:00
asm-s390 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-sh [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-sh64 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-sparc [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-sparc64 [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
asm-um [PATCH] uml: eliminate anonymous union and clean up symlink lossage 2005-11-22 09:13:41 -08:00
asm-v850 [PATCH] v850: use generic hardirq code 2005-11-15 08:59:20 -08:00
asm-x86_64 [PATCH] Fix x86_64/msr.h interface to agree with i386/msr.h 2005-11-20 11:52:59 -08:00
asm-xtensa [PATCH] atomic: inc_not_zero 2005-11-13 18:14:16 -08:00
keys [PATCH] Keys: Export user-defined keyring operations 2005-10-30 17:37:22 -08:00
linux [PATCH] unpaged: VM_UNPAGED 2005-11-22 09:13:42 -08:00
math-emu
media [PATCH] v4l: (945) adds a new include for internal v4l2 ioctls and api 2005-11-13 18:14:19 -08:00
mtd [MTD] user-abi: Clean up trailing white spaces 2005-11-07 14:43:11 +01:00
net Merge git://git.skbuff.net/gitroot/yoshfuji/linux-2.6.14+advapi-fix/ 2005-11-20 20:52:16 -08:00
pcmcia [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
rdma [IB] uverbs: have kernel return QP capabilities 2005-11-10 10:22:50 -08:00
rxrpc
scsi [SCSI] use a completion in scsi_send_eh_cmnd 2005-11-06 12:49:36 -06:00
sound [ALSA] version 1.0.10rc3 2005-11-07 14:35:14 +01:00
video