Lines Matching full:parity

31  *  Empty -> Want   - on read or write to get old data for  parity calc
52  * from parity calculations, and a clean block that has been
53  * successfully written to the spare ( or to parity when resyncing).
55  * is set whenever a write is scheduled to the spare, or to the parity
77  * third list, the written list (bh_written).  Once both the parity
133  * -updating the parity on a write operation (reconstruct write and
135  * -checking parity correctness
144  * 1/ Parity check operations destroy the in cache version of the parity block,
145  *    so we prevent parity dependent operations like writes and compute_blocks
147  *    the check without damaging the parity block, in these cases the parity
152  *    to be held off, as well as parity checks and compute block operations.
178 	check_state_run, /* xor parity check */
179 	check_state_run_q, /* q-parity check */
180 	check_state_run_pq, /* pq dual parity check */
182 	check_state_compute_run, /* parity repair */
208 	short			pd_idx;		/* parity disk index */
239 	struct page		*ppl_page; /* partial parity of this stripe */
279 	 * to check/correct parity, or to reconstruct a missing device.
338 			 * if R5_InJournal is set for parity pd_idx, all the
339 			 * data and parity being written are in the journal
423  * RAID parity calculation preferences
729 #define ALGORITHM_LEFT_ASYMMETRIC	0 /* Rotating Parity N with Data Restart */
730 #define ALGORITHM_RIGHT_ASYMMETRIC	1 /* Rotating Parity 0 with Data Restart */
731 #define ALGORITHM_LEFT_SYMMETRIC	2 /* Rotating Parity N with Data Continuation */
732 #define ALGORITHM_RIGHT_SYMMETRIC	3 /* Rotating Parity 0 with Data Continuation */
741  * Firstly, the exact positioning of the parity block is slightly
757  * with exactly the same layout for data and parity, and