| arc.c (321610) | arc.c (321613) |
|---|---|
| 1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE --- 1329 unchanged lines hidden (view full) --- 1338static kmutex_t l2arc_free_on_write_mtx; /* mutex for list */ 1339static uint64_t l2arc_ndev; /* number of devices */ 1340 1341typedef struct l2arc_read_callback { 1342 arc_buf_hdr_t *l2rcb_hdr; /* read header */ 1343 blkptr_t l2rcb_bp; /* original blkptr */ 1344 zbookmark_phys_t l2rcb_zb; /* original bookmark */ 1345 int l2rcb_flags; /* original flags */ | 1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE --- 1329 unchanged lines hidden (view full) --- 1338static kmutex_t l2arc_free_on_write_mtx; /* mutex for list */ 1339static uint64_t l2arc_ndev; /* number of devices */ 1340 1341typedef struct l2arc_read_callback { 1342 arc_buf_hdr_t *l2rcb_hdr; /* read header */ 1343 blkptr_t l2rcb_bp; /* original blkptr */ 1344 zbookmark_phys_t l2rcb_zb; /* original bookmark */ 1345 int l2rcb_flags; /* original flags */ |
| 1346 void *l2rcb_abd; /* temporary buffer */ | 1346 abd_t *l2rcb_abd; /* temporary buffer */ |
| 1347} l2arc_read_callback_t; 1348 1349typedef struct l2arc_write_callback { 1350 l2arc_dev_t *l2wcb_dev; /* device info */ 1351 arc_buf_hdr_t *l2wcb_head; /* head of write buflist */ 1352} l2arc_write_callback_t; 1353 1354typedef struct l2arc_data_free { --- 6125 unchanged lines hidden (view full) --- 7480 mutex_exit(&dev->l2ad_mtx); 7481 7482 (void) refcount_add_many(&dev->l2ad_alloc, size, hdr); 7483 7484 /* 7485 * Normally the L2ARC can use the hdr's data, but if 7486 * we're sharing data between the hdr and one of its 7487 * bufs, L2ARC needs its own copy of the data so that | 1347} l2arc_read_callback_t; 1348 1349typedef struct l2arc_write_callback { 1350 l2arc_dev_t *l2wcb_dev; /* device info */ 1351 arc_buf_hdr_t *l2wcb_head; /* head of write buflist */ 1352} l2arc_write_callback_t; 1353 1354typedef struct l2arc_data_free { --- 6125 unchanged lines hidden (view full) --- 7480 mutex_exit(&dev->l2ad_mtx); 7481 7482 (void) refcount_add_many(&dev->l2ad_alloc, size, hdr); 7483 7484 /* 7485 * Normally the L2ARC can use the hdr's data, but if 7486 * we're sharing data between the hdr and one of its 7487 * bufs, L2ARC needs its own copy of the data so that |
| 7488 * the ZIO below can't race with the buf consumer. To 7489 * ensure that this copy will be available for the | 7488 * the ZIO below can't race with the buf consumer. 7489 * Another case where we need to create a copy of the 7490 * data is when the buffer size is not device-aligned 7491 * and we need to pad the block to make it such. 7492 * That also keeps the clock hand suitably aligned. 7493 * 7494 * To ensure that the copy will be available for the |
| 7490 * lifetime of the ZIO and be cleaned up afterwards, we 7491 * add it to the l2arc_free_on_write queue. 7492 */ 7493 abd_t *to_write; 7494 if (!HDR_SHARED_DATA(hdr) && size == asize) { 7495 to_write = hdr->b_l1hdr.b_pabd; 7496 } else { 7497 to_write = abd_alloc_for_io(asize, --- 326 unchanged lines hidden --- | 7495 * lifetime of the ZIO and be cleaned up afterwards, we 7496 * add it to the l2arc_free_on_write queue. 7497 */ 7498 abd_t *to_write; 7499 if (!HDR_SHARED_DATA(hdr) && size == asize) { 7500 to_write = hdr->b_l1hdr.b_pabd; 7501 } else { 7502 to_write = abd_alloc_for_io(asize, --- 326 unchanged lines hidden --- |