James Bottomley
a6ca1b99ed
[PATCH] update to the kernel kmap/kunmap API ...
Give non-highmem architectures access to the kmap API for the purposes of
overriding (this is what the attached patch does).
The proposal is that we should now require all architectures with coherence
issues to manage data coherence via the kmap/kunmap API. Thus driver
writers never have to write code like
kmap(page)
modify data in page
flush_kernel_dcache_page(page)
kunmap(page)
instead, kmap/kunmap will manage the coherence and driver (and filesystem)
writers don't need to worry about how to flush between kmap and kunmap.
For most architectures, the page only needs to be flushed if it was
actually written to *and* there are user mappings of it, so the best
implementation looks to be: clear the page dirty pte bit in the kernel page
tables on kmap and on kunmap, check page->mappings for user maps, and then
the dirty bit, and only flush if it both has user mappings and is dirty.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:44 -07:00
[libata] No need for all those arch libata-portmap.h headers
2006-09-25 15:33:09 -04:00
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2006-09-24 22:05:59 +01:00
Remove ARM26 header export.
2006-09-21 08:54:44 +01:00
Clean up exported headers on CRIS
2006-09-21 09:33:55 +01:00
[libata] No need for all those arch libata-portmap.h headers
2006-09-25 15:33:09 -04:00
[PATCH] trigger a syntax error if percpu macros are incorrectly used
2006-09-26 08:48:44 -07:00
Fix H8300 exported headers.
2006-09-21 08:51:43 +01:00
[libata] No need for all those arch libata-portmap.h headers
2006-09-25 15:33:09 -04:00
[PATCH] cpu to node relationship fixup: map cpu to node
2006-09-25 17:38:36 -07:00
Fix 'make headers_check' on m32r
2006-09-21 08:41:35 +01:00
[PATCH] Fix 'make headers_check' on ia64
2006-09-19 07:59:59 -07:00
Fix m68knommu exported headers
2006-09-21 08:50:36 +01:00
[PATCH] headers_check: fix userspace build of asm-mips/page.h
2006-09-13 07:32:16 -07:00
[PATCH] headers_check: Clean up asm-parisc/page.h for user headers
2006-09-19 07:59:59 -07:00
[libata] No need for all those arch libata-portmap.h headers
2006-09-25 15:33:09 -04:00
[PATCH] #elif that should've been #elif defined
2006-09-23 11:34:43 -07:00
[PATCH] trigger a syntax error if percpu macros are incorrectly used
2006-09-26 08:48:44 -07:00
Fix 'make headers_check' on sh
2006-09-21 08:36:50 +01:00
Fix 'make headers_check' on sh64
2006-09-21 08:37:10 +01:00
[libata] No need for all those arch libata-portmap.h headers
2006-09-25 15:33:09 -04:00
[libata] No need for all those arch libata-portmap.h headers
2006-09-25 15:33:09 -04:00
Remove UML header export
2006-09-21 08:55:28 +01:00
Fix v850 exported headers
2006-09-21 09:05:25 +01:00
[PATCH] trigger a syntax error if percpu macros are incorrectly used
2006-09-26 08:48:44 -07:00
[CRYPTO] digest: Added user API for new hash type
2006-09-21 11:46:17 +10:00
[PATCH] update to the kernel kmap/kunmap API
2006-09-26 08:48:44 -07:00
Merge git://git.infradead.org/~dwmw2/hdroneline
2006-09-22 12:56:22 -07:00
[NetLabel]: rework the Netlink attribute handling (part 1)
2006-09-25 15:56:09 -07:00
IB/sa: fix ib_sa_selector names
2006-09-22 15:22:55 -07:00
[PATCH] SCSI gfp_t annotations
2006-09-24 20:07:49 -07:00
[ALSA] ak4xxx - Remove bogus IPGA controls
2006-09-23 10:46:55 +02:00
[HEADERS] One line per header in Kbuild files to reduce conflicts
2006-09-19 12:43:58 +01:00
[HEADERS] One line per header in Kbuild files to reduce conflicts
2006-09-19 12:43:58 +01:00
a6ca1b99ed