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Dan Williams 0a82a6239b async_tx: add support for asynchronous RAID6 recovery operations ... async_raid6_2data_recov() recovers two data disk failures async_raid6_datap_recov() recovers a data disk and the P disk These routines are a port of the synchronous versions found in drivers/md/raid6recov.c. The primary difference is breaking out the xor operations into separate calls to async_xor. Two helper routines are introduced to perform scalar multiplication where needed. async_sum_product() multiplies two sources by scalar coefficients and then sums (xor) the result. async_mult() simply multiplies a single source by a scalar. This implemention also includes, in contrast to the original synchronous-only code, special case handling for the 4-disk and 5-disk array cases. In these situations the default N-disk algorithm will present 0-source or 1-source operations to dma devices. To cover for dma devices where the minimum source count is 2 we implement 4-disk and 5-disk handling in the recovery code. [ Impact: asynchronous raid6 recovery routines for 2data and datap cases ] Cc: Yuri Tikhonov <yur@emcraft.com> Cc: Ilya Yanok <yanok@emcraft.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: David Woodhouse <David.Woodhouse@intel.com> Reviewed-by: Andre Noll <maan@systemlinux.org> Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>		16 years ago
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acpi	ACPI: Enable bit 11 in _PDC to advertise hw coord	16 years ago
asm-arm	…
asm-frv	FRV: __pte_to_swp_entry doesn't expand correctly	16 years ago
asm-generic	Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	16 years ago
asm-h8300	…
asm-m32r	byteorder: make swab.h include asm/swab.h like a regular header	16 years ago
asm-mn10300	byteorder: make swab.h include asm/swab.h like a regular header	16 years ago
crypto	crypto: shash - Fix tfm destruction	16 years ago
drm	drm: fix EDID parser problem with positive/negative hsync/vsync	16 years ago
keys	…
linux	async_tx: add support for asynchronous RAID6 recovery operations	16 years ago
math-emu	…
media	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	16 years ago
mtd	headers_check fix: mtd/inftl-user.h	16 years ago
net	netns: Remove net_alive	16 years ago
pcmcia	…
rdma	…
rxrpc	…
scsi	[SCSI] iscsi_tcp: make padbuf non-static	16 years ago
sound	headers_check fix: sound/hdsp.h	16 years ago
trace	…
video	atyfb: fix CONFIG_ namespace violations	16 years ago
xen	…
Kbuild	…