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Dan Williams 5157b4aa5b raid6: fix recovery performance regression 
The raid6 recovery code should immediately drop back to the optimized
synchronous path when a p+q dma resource is not available.  Otherwise we
run the non-optimized/multi-pass async code in sync mode.

Verified with raid6test (NDISKS=255)

Applies to kernels >= 2.6.32.

Cc: <stable@kernel.org>
Acked-by: NeilBrown <neilb@suse.de>
Reported-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2010-05-05 07:52:56 -07:00
..
async_tx raid6: fix recovery performance regression 2010-05-05 07:52:56 -07:00
Kconfig Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
Makefile crypto: pcrypt - Add pcrypt crypto parallelization wrapper 2010-01-07 15:57:19 +11:00
ablkcipher.c crypto: ablkcipher - Fix checkpatch errors 2010-02-16 20:23:37 +08:00
aead.c crypto: aead - Fix checkpatch errors 2010-02-16 20:24:07 +08:00
aes_generic.c crypto: aes_generic - Fix checkpatch errors 2010-02-16 20:34:59 +08:00
ahash.c crypto: hash - Fix handling of unaligned buffers 2010-03-03 08:03:23 +08:00
algapi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
algboss.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ansi_cprng.c
…
anubis.c crypto: anubis - Fix checkpatch errors 2010-02-16 20:25:39 +08:00
api.c crypto: api - Fix checkpatch errors 2010-02-16 20:26:46 +08:00
arc4.c
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authenc.c crypto: authenc - Add EINPROGRESS check 2010-04-26 09:14:05 +08:00
blkcipher.c
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blowfish.c crypto: blowfish - Fix checkpatch errors 2010-02-16 20:24:30 +08:00
camellia.c crypto: camellia - Fix checkpatch errors 2010-02-16 20:27:57 +08:00
cast5.c crypto: cast5 - Fix checkpatch errors 2010-02-16 20:29:01 +08:00
cast6.c crypto: cast6 - Fix checkpatch errors 2010-02-16 20:29:45 +08:00
cbc.c
…
ccm.c
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chainiv.c
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cipher.c crypto: cipher - Fix checkpatch errors 2010-02-16 20:31:37 +08:00
compress.c crypto: compress - Fix checkpatch errors 2010-02-16 20:31:04 +08:00
crc32c.c crypto: crc32 - Fix checkpatch errors 2010-02-16 20:31:19 +08:00
cryptd.c percpu: add __percpu sparse annotations to what's left 2010-02-17 11:17:38 +09:00
crypto_null.c crypto: crypto_null - Fix checkpatch errors 2010-02-16 20:31:54 +08:00
crypto_wq.c
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ctr.c
…
cts.c
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deflate.c crypto: deflate - Fix checkpatch errors 2010-02-16 20:32:13 +08:00
des_generic.c crypto: des_generic - Fix checkpatch errors 2010-02-16 20:32:31 +08:00
ecb.c crypto: ecb - Fix checkpatch errors 2010-02-16 20:33:49 +08:00
eseqiv.c
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fcrypt.c crypto: fcrypt - Fix checkpatch errors 2010-02-16 20:34:07 +08:00
fips.c
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gcm.c crypto: gcm - Add RFC4543 wrapper for GCM 2010-01-17 21:52:11 +11:00
gf128mul.c
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ghash-generic.c
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hmac.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
internal.h
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khazad.c
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krng.c
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lrw.c
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lzo.c
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md4.c
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md5.c crypto: md5 - Set statesize 2010-03-02 21:58:16 +08:00
michael_mic.c
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pcbc.c
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pcompress.c
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pcrypt.c crypto: pcrypt - call the complete function on error 2010-02-04 11:40:17 +11:00
proc.c
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ripemd.h
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rmd128.c
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rmd160.c
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rmd256.c
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rmd320.c
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rng.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
salsa20_generic.c
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scatterwalk.c
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seed.c
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seqiv.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
serpent.c
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sha1_generic.c
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sha256_generic.c
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sha512_generic.c
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shash.c
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tcrypt.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
tcrypt.h
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tea.c
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testmgr.c
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testmgr.h
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tgr192.c
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twofish.c
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twofish_common.c
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vmac.c
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wp512.c
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xcbc.c
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xor.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
xts.c
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zlib.c
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