crypto/async_tx/async_raid6_recov.c

153 __2data_recov_4(int disks, size_t bytes, int faila, int failb,
173 	a = blocks[faila];
174 	a_off = offs[faila];
184 	coef[0] = raid6_gfexi[failb-faila];
185 	coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
203 __2data_recov_5(int disks, size_t bytes, int faila, int failb,
224 		if (i == faila || i == failb)
242 	dp = blocks[faila];
243 	dp_off = offs[faila];
276 	coef[0] = raid6_gfexi[failb-faila];
277 	coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
294 __2data_recov_n(int disks, size_t bytes, int faila, int failb,
318 	dp = blocks[faila];
319 	dp_off = offs[faila];
320 	blocks[faila] = NULL;
333 	blocks[faila]   = dp;
334 	offs[faila] = dp_off;
365 	coef[0] = raid6_gfexi[failb-faila];
366 	coef[1] = raid6_gfinv[raid6_gfexp[faila]^raid6_gfexp[failb]];
386  * @faila: first failed drive index
393 async_raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
400 	BUG_ON(faila == failb);
401 	if (failb < faila)
402 		swap(faila, failb);
421 		raid6_2data_recov(disks, bytes, faila, failb, ptrs);
444 		return __2data_recov_4(disks, bytes, faila, failb,
452 		return __2data_recov_5(disks, bytes, faila, failb,
455 		return __2data_recov_n(disks, bytes, faila, failb,
465  * @faila: failed drive index
471 async_raid6_datap_recov(int disks, size_t bytes, int faila,
504 		raid6_datap_recov(disks, bytes, faila, ptrs);
514 		if (i == faila)
533 	dq = blocks[faila];
534 	dq_off = offs[faila];
535 	blocks[faila] = NULL;
561 	blocks[faila]   = dq;
562 	offs[faila] = dq_off;
566 	/* calculate g^{-faila} */
567 	coef = raid6_gfinv[raid6_gfexp[faila]];