kernel-ark/include
Dan Williams a445685647 raid5: refactor handle_stripe5 and handle_stripe6 (v3)
handle_stripe5 and handle_stripe6 have very deep logic paths handling the
various states of a stripe_head.  By introducing the 'stripe_head_state'
and 'r6_state' objects, large portions of the logic can be moved to
sub-routines.

'struct stripe_head_state' consumes all of the automatic variables that previously
stood alone in handle_stripe5,6.  'struct r6_state' contains the handle_stripe6
specific variables like p_failed and q_failed.

One of the nice side effects of the 'stripe_head_state' change is that it
allows for further reductions in code duplication between raid5 and raid6.
The following new routines are shared between raid5 and raid6:

	handle_completed_write_requests
	handle_requests_to_failed_array
	handle_stripe_expansion

Changes:
* v2: fixed 'conf->raid_disk-1' for the raid6 'handle_stripe_expansion' path
* v3: removed the unused 'dirty' field from struct stripe_head_state
* v3: coalesced open coded bi_end_io routines into return_io()

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-By: NeilBrown <neilb@suse.de>
2007-07-13 08:06:15 -07:00
..
acpi
asm-alpha
asm-arm Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM 2007-06-28 11:38:30 -07:00
asm-arm26
asm-avr32
asm-blackfin Blackfin arch: remove zero-sized include/asm-blackfin/macros.h 2007-07-03 08:25:50 +08:00
asm-cris
asm-frv frv: fix fallout from "remove sched.h from mm.h" patch 2007-07-01 12:29:44 -07:00
asm-generic
asm-h8300
asm-i386 i386: es7000 build breakage fix 2007-07-06 10:23:43 -07:00
asm-ia64 [IA64] change sh_change_coherence oemcall to use nolock 2007-06-26 13:33:58 -07:00
asm-m32r
asm-m68k
asm-m68knommu
asm-mips [MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores 2007-07-06 16:17:11 +01:00
asm-parisc
asm-powerpc [POWERPC] Uninline and export virq_to_hw() for the pasemi_mac driver 2007-07-02 13:29:21 +10:00
asm-ppc
asm-s390
asm-sh
asm-sh64
asm-sparc
asm-sparc64 [SPARC64]: Add linux/pagemap.h to asm/tlb.h 2007-06-28 21:25:31 -07:00
asm-um
asm-v850
asm-x86_64
asm-xtensa
crypto
keys
linux raid5: refactor handle_stripe5 and handle_stripe6 (v3) 2007-07-13 08:06:15 -07:00
math-emu
media
mtd
net
pcmcia
rdma
rxrpc
scsi
sound
video
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