diff options
Diffstat (limited to 'drivers/lightnvm')
| -rw-r--r-- | drivers/lightnvm/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/lightnvm/core.c | 242 | ||||
| -rw-r--r-- | drivers/lightnvm/gennvm.c | 385 | ||||
| -rw-r--r-- | drivers/lightnvm/gennvm.h | 10 | ||||
| -rw-r--r-- | drivers/lightnvm/rrpc.c | 155 | ||||
| -rw-r--r-- | drivers/lightnvm/rrpc.h | 13 | ||||
| -rw-r--r-- | drivers/lightnvm/sysblk.c | 8 |
7 files changed, 407 insertions, 416 deletions
diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig index 85a339030e4b..61c68a1f054a 100644 --- a/drivers/lightnvm/Kconfig +++ b/drivers/lightnvm/Kconfig @@ -27,11 +27,13 @@ config NVM_DEBUG It is required to create/remove targets without IOCTLs. config NVM_GENNVM - tristate "Generic NVM manager for Open-Channel SSDs" + tristate "General Non-Volatile Memory Manager for Open-Channel SSDs" ---help--- - NVM media manager for Open-Channel SSDs that offload management - functionality to device, while keeping data placement and garbage - collection decisions on the host. + Non-volatile memory media manager for Open-Channel SSDs that implements + physical media metadata management and block provisioning API. + + This is the standard media manager for using Open-Channel SSDs, and + required for targets to be instantiated. config NVM_RRPC tristate "Round-robin Hybrid Open-Channel SSD target" diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c index 160c1a6838e1..9ebd2cfbd849 100644 --- a/drivers/lightnvm/core.c +++ b/drivers/lightnvm/core.c @@ -18,8 +18,6 @@ * */ -#include <linux/blkdev.h> -#include <linux/blk-mq.h> #include <linux/list.h> #include <linux/types.h> #include <linux/sem.h> @@ -28,46 +26,42 @@ #include <linux/miscdevice.h> #include <linux/lightnvm.h> #include <linux/sched/sysctl.h> -#include <uapi/linux/lightnvm.h> static LIST_HEAD(nvm_tgt_types); +static DECLARE_RWSEM(nvm_tgtt_lock); static LIST_HEAD(nvm_mgrs); static LIST_HEAD(nvm_devices); -static LIST_HEAD(nvm_targets); static DECLARE_RWSEM(nvm_lock); -static struct nvm_target *nvm_find_target(const char *name) +struct nvm_tgt_type *nvm_find_target_type(const char *name, int lock) { - struct nvm_target *tgt; + struct nvm_tgt_type *tmp, *tt = NULL; - list_for_each_entry(tgt, &nvm_targets, list) - if (!strcmp(name, tgt->disk->disk_name)) - return tgt; + if (lock) + down_write(&nvm_tgtt_lock); - return NULL; -} - -static struct nvm_tgt_type *nvm_find_target_type(const char *name) -{ - struct nvm_tgt_type *tt; - - list_for_each_entry(tt, &nvm_tgt_types, list) - if (!strcmp(name, tt->name)) - return tt; + list_for_each_entry(tmp, &nvm_tgt_types, list) + if (!strcmp(name, tmp->name)) { + tt = tmp; + break; + } - return NULL; + if (lock) + up_write(&nvm_tgtt_lock); + return tt; } +EXPORT_SYMBOL(nvm_find_target_type); int nvm_register_tgt_type(struct nvm_tgt_type *tt) { int ret = 0; - down_write(&nvm_lock); - if (nvm_find_target_type(tt->name)) + down_write(&nvm_tgtt_lock); + if (nvm_find_target_type(tt->name, 0)) ret = -EEXIST; else list_add(&tt->list, &nvm_tgt_types); - up_write(&nvm_lock); + up_write(&nvm_tgtt_lock); return ret; } @@ -110,7 +104,7 @@ static struct nvmm_type *nvm_find_mgr_type(const char *name) return NULL; } -struct nvmm_type *nvm_init_mgr(struct nvm_dev *dev) +static struct nvmm_type *nvm_init_mgr(struct nvm_dev *dev) { struct nvmm_type *mt; int ret; @@ -182,20 +176,6 @@ static struct nvm_dev *nvm_find_nvm_dev(const char *name) return NULL; } -struct nvm_block *nvm_get_blk_unlocked(struct nvm_dev *dev, struct nvm_lun *lun, - unsigned long flags) -{ - return dev->mt->get_blk_unlocked(dev, lun, flags); -} -EXPORT_SYMBOL(nvm_get_blk_unlocked); - -/* Assumes that all valid pages have already been moved on release to bm */ -void nvm_put_blk_unlocked(struct nvm_dev *dev, struct nvm_block *blk) -{ - return dev->mt->put_blk_unlocked(dev, blk); -} -EXPORT_SYMBOL(nvm_put_blk_unlocked); - struct nvm_block *nvm_get_blk(struct nvm_dev *dev, struct nvm_lun *lun, unsigned long flags) { @@ -210,6 +190,12 @@ void nvm_put_blk(struct nvm_dev *dev, struct nvm_block *blk) } EXPORT_SYMBOL(nvm_put_blk); +void nvm_mark_blk(struct nvm_dev *dev, struct ppa_addr ppa, int type) +{ + return dev->mt->mark_blk(dev, ppa, type); +} +EXPORT_SYMBOL(nvm_mark_blk); + int nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) { return dev->mt->submit_io(dev, rqd); @@ -251,9 +237,10 @@ void nvm_generic_to_addr_mode(struct nvm_dev *dev, struct nvm_rq *rqd) EXPORT_SYMBOL(nvm_generic_to_addr_mode); int nvm_set_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd, - struct ppa_addr *ppas, int nr_ppas, int vblk) + const struct ppa_addr *ppas, int nr_ppas, int vblk) { int i, plane_cnt, pl_idx; + struct ppa_addr ppa; if ((!vblk || dev->plane_mode == NVM_PLANE_SINGLE) && nr_ppas == 1) { rqd->nr_ppas = nr_ppas; @@ -278,8 +265,9 @@ int nvm_set_rqd_ppalist(struct nvm_dev *dev, struct nvm_rq *rqd, for (i = 0; i < nr_ppas; i++) { for (pl_idx = 0; pl_idx < plane_cnt; pl_idx++) { - ppas[i].g.pl = pl_idx; - rqd->ppa_list[(pl_idx * nr_ppas) + i] = ppas[i]; + ppa = ppas[i]; + ppa.g.pl = pl_idx; + rqd->ppa_list[(pl_idx * nr_ppas) + i] = ppa; } } } @@ -337,7 +325,7 @@ static void nvm_end_io_sync(struct nvm_rq *rqd) complete(waiting); } -int __nvm_submit_ppa(struct nvm_dev *dev, struct nvm_rq *rqd, int opcode, +static int __nvm_submit_ppa(struct nvm_dev *dev, struct nvm_rq *rqd, int opcode, int flags, void *buf, int len) { DECLARE_COMPLETION_ONSTACK(wait); @@ -367,7 +355,9 @@ int __nvm_submit_ppa(struct nvm_dev *dev, struct nvm_rq *rqd, int opcode, /* Prevent hang_check timer from firing at us during very long I/O */ hang_check = sysctl_hung_task_timeout_secs; if (hang_check) - while (!wait_for_completion_io_timeout(&wait, hang_check * (HZ/2))); + while (!wait_for_completion_io_timeout(&wait, + hang_check * (HZ/2))) + ; else wait_for_completion_io(&wait); @@ -510,7 +500,8 @@ static int nvm_init_mlc_tbl(struct nvm_dev *dev, struct nvm_id_group *grp) /* The lower page table encoding consists of a list of bytes, where each * has a lower and an upper half. The first half byte maintains the * increment value and every value after is an offset added to the - * previous incrementation value */ + * previous incrementation value + */ dev->lptbl[0] = mlc->pairs[0] & 0xF; for (i = 1; i < dev->lps_per_blk; i++) { p = mlc->pairs[i >> 1]; @@ -596,42 +587,11 @@ err_fmtype: return ret; } -static void nvm_remove_target(struct nvm_target *t) -{ - struct nvm_tgt_type *tt = t->type; - struct gendisk *tdisk = t->disk; - struct request_queue *q = tdisk->queue; - - lockdep_assert_held(&nvm_lock); - - del_gendisk(tdisk); - blk_cleanup_queue(q); - - if (tt->exit) - tt->exit(tdisk->private_data); - - put_disk(tdisk); - - list_del(&t->list); - kfree(t); -} - static void nvm_free_mgr(struct nvm_dev *dev) { - struct nvm_target *tgt, *tmp; - if (!dev->mt) return; - down_write(&nvm_lock); - list_for_each_entry_safe(tgt, tmp, &nvm_targets, list) { - if (tgt->dev != dev) - continue; - - nvm_remove_target(tgt); - } - up_write(&nvm_lock); - dev->mt->unregister_mgr(dev); dev->mt = NULL; } @@ -778,91 +738,6 @@ void nvm_unregister(char *disk_name) } EXPORT_SYMBOL(nvm_unregister); -static const struct block_device_operations nvm_fops = { - .owner = THIS_MODULE, -}; - -static int nvm_create_target(struct nvm_dev *dev, - struct nvm_ioctl_create *create) -{ - struct nvm_ioctl_create_simple *s = &create->conf.s; - struct request_queue *tqueue; - struct gendisk *tdisk; - struct nvm_tgt_type *tt; - struct nvm_target *t; - void *targetdata; - - if (!dev->mt) { - pr_info("nvm: device has no media manager registered.\n"); - return -ENODEV; - } - - down_write(&nvm_lock); - tt = nvm_find_target_type(create->tgttype); - if (!tt) { - pr_err("nvm: target type %s not found\n", create->tgttype); - up_write(&nvm_lock); - return -EINVAL; - } - - t = nvm_find_target(create->tgtname); - if (t) { - pr_err("nvm: target name already exists.\n"); - up_write(&nvm_lock); - return -EINVAL; - } - up_write(&nvm_lock); - - t = kmalloc(sizeof(struct nvm_target), GFP_KERNEL); - if (!t) - return -ENOMEM; - - tqueue = blk_alloc_queue_node(GFP_KERNEL, dev->q->node); - if (!tqueue) - goto err_t; - blk_queue_make_request(tqueue, tt->make_rq); - - tdisk = alloc_disk(0); - if (!tdisk) - goto err_queue; - - sprintf(tdisk->disk_name, "%s", create->tgtname); - tdisk->flags = GENHD_FL_EXT_DEVT; - tdisk->major = 0; - tdisk->first_minor = 0; - tdisk->fops = &nvm_fops; - tdisk->queue = tqueue; - - targetdata = tt->init(dev, tdisk, s->lun_begin, s->lun_end); - if (IS_ERR(targetdata)) - goto err_init; - - tdisk->private_data = targetdata; - tqueue->queuedata = targetdata; - - blk_queue_max_hw_sectors(tqueue, 8 * dev->ops->max_phys_sect); - - set_capacity(tdisk, tt->capacity(targetdata)); - add_disk(tdisk); - - t->type = tt; - t->disk = tdisk; - t->dev = dev; - - down_write(&nvm_lock); - list_add_tail(&t->list, &nvm_targets); - up_write(&nvm_lock); - - return 0; -err_init: - put_disk(tdisk); -err_queue: - blk_cleanup_queue(tqueue); -err_t: - kfree(t); - return -ENOMEM; -} - static int __nvm_configure_create(struct nvm_ioctl_create *create) { struct nvm_dev *dev; @@ -871,11 +746,17 @@ static int __nvm_configure_create(struct nvm_ioctl_create *create) down_write(&nvm_lock); dev = nvm_find_nvm_dev(create->dev); up_write(&nvm_lock); + if (!dev) { pr_err("nvm: device not found\n"); return -EINVAL; } + if (!dev->mt) { + pr_info("nvm: device has no media manager registered.\n"); + return -ENODEV; + } + if (create->conf.type != NVM_CONFIG_TYPE_SIMPLE) { pr_err("nvm: config type not valid\n"); return -EINVAL; @@ -888,25 +769,7 @@ static int __nvm_configure_create(struct nvm_ioctl_create *create) return -EINVAL; } - return nvm_create_target(dev, create); -} - -static int __nvm_configure_remove(struct nvm_ioctl_remove *remove) -{ - struct nvm_target *t; - - down_write(&nvm_lock); - t = nvm_find_target(remove->tgtname); - if (!t) { - pr_err("nvm: target \"%s\" doesn't exist.\n", remove->tgtname); - up_write(&nvm_lock); - return -EINVAL; - } - - nvm_remove_target(t); - up_write(&nvm_lock); - - return 0; + return dev->mt->create_tgt(dev, create); } #ifdef CONFIG_NVM_DEBUG @@ -941,8 +804,9 @@ static int nvm_configure_show(const char *val) static int nvm_configure_remove(const char *val) { struct nvm_ioctl_remove remove; + struct nvm_dev *dev; char opcode; - int ret; + int ret = 0; ret = sscanf(val, "%c %256s", &opcode, remove.tgtname); if (ret != 2) { @@ -952,7 +816,13 @@ static int nvm_configure_remove(const char *val) remove.flags = 0; - return __nvm_configure_remove(&remove); + list_for_each_entry(dev, &nvm_devices, devices) { + ret = dev->mt->remove_tgt(dev, &remove); + if (!ret) + break; + } + + return ret; } static int nvm_configure_create(const char *val) @@ -1149,6 +1019,8 @@ static long nvm_ioctl_dev_create(struct file *file, void __user *arg) static long nvm_ioctl_dev_remove(struct file *file, void __user *arg) { struct nvm_ioctl_remove remove; + struct nvm_dev *dev; + int ret = 0; if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -1163,7 +1035,13 @@ static long nvm_ioctl_dev_remove(struct file *file, void __user *arg) return -EINVAL; } - return __nvm_configure_remove(&remove); + list_for_each_entry(dev, &nvm_devices, devices) { + ret = dev->mt->remove_tgt(dev, &remove); + if (!ret) + break; + } + + return ret; } static void nvm_setup_nvm_sb_info(struct nvm_sb_info *info) diff --git a/drivers/lightnvm/gennvm.c b/drivers/lightnvm/gennvm.c index ec9fb6876e38..b74174c6d021 100644 --- a/drivers/lightnvm/gennvm.c +++ b/drivers/lightnvm/gennvm.c @@ -15,22 +15,160 @@ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, * USA. * - * Implementation of a generic nvm manager for Open-Channel SSDs. + * Implementation of a general nvm manager for Open-Channel SSDs. */ #include "gennvm.h" -static int gennvm_get_area(struct nvm_dev *dev, sector_t *lba, sector_t len) +static struct nvm_target *gen_find_target(struct gen_dev *gn, const char *name) { - struct gen_nvm *gn = dev->mp; - struct gennvm_area *area, *prev, *next; + struct nvm_target *tgt; + + list_for_each_entry(tgt, &gn->targets, list) + if (!strcmp(name, tgt->disk->disk_name)) + return tgt; + + return NULL; +} + +static const struct block_device_operations gen_fops = { + .owner = THIS_MODULE, +}; + +static int gen_create_tgt(struct nvm_dev *dev, struct nvm_ioctl_create *create) +{ + struct gen_dev *gn = dev->mp; + struct nvm_ioctl_create_simple *s = &create->conf.s; + struct request_queue *tqueue; + struct gendisk *tdisk; + struct nvm_tgt_type *tt; + struct nvm_target *t; + void *targetdata; + + tt = nvm_find_target_type(create->tgttype, 1); + if (!tt) { + pr_err("nvm: target type %s not found\n", create->tgttype); + return -EINVAL; + } + + mutex_lock(&gn->lock); + t = gen_find_target(gn, create->tgtname); + if (t) { + pr_err("nvm: target name already exists.\n"); + mutex_unlock(&gn->lock); + return -EINVAL; + } + mutex_unlock(&gn->lock); + + t = kmalloc(sizeof(struct nvm_target), GFP_KERNEL); + if (!t) + return -ENOMEM; + + tqueue = blk_alloc_queue_node(GFP_KERNEL, dev->q->node); + if (!tqueue) + goto err_t; + blk_queue_make_request(tqueue, tt->make_rq); + + tdisk = alloc_disk(0); + if (!tdisk) + goto err_queue; + + sprintf(tdisk->disk_name, "%s", create->tgtname); + tdisk->flags = GENHD_FL_EXT_DEVT; + tdisk->major = 0; + tdisk->first_minor = 0; + tdisk->fops = &gen_fops; + tdisk->queue = tqueue; + + targetdata = tt->init(dev, tdisk, s->lun_begin, s->lun_end); + if (IS_ERR(targetdata)) + goto err_init; + + tdisk->private_data = targetdata; + tqueue->queuedata = targetdata; + + blk_queue_max_hw_sectors(tqueue, 8 * dev->ops->max_phys_sect); + + set_capacity(tdisk, tt->capacity(targetdata)); + add_disk(tdisk); + + t->type = tt; + t->disk = tdisk; + t->dev = dev; + + mutex_lock(&gn->lock); + list_add_tail(&t->list, &gn->targets); + mutex_unlock(&gn->lock); + + return 0; +err_init: + put_disk(tdisk); +err_queue: + blk_cleanup_queue(tqueue); +err_t: + kfree(t); + return -ENOMEM; +} + +static void __gen_remove_target(struct nvm_target *t) +{ + struct nvm_tgt_type *tt = t->type; + struct gendisk *tdisk = t->disk; + struct request_queue *q = tdisk->queue; + + del_gendisk(tdisk); + blk_cleanup_queue(q); + + if (tt->exit) + tt->exit(tdisk->private_data); + + put_disk(tdisk); + + list_del(&t->list); + kfree(t); +} + +/** + * gen_remove_tgt - Removes a target from the media manager + * @dev: device + * @remove: ioctl structure with target name to remove. + * + * Returns: + * 0: on success + * 1: on not found + * <0: on error + */ +static int gen_remove_tgt(struct nvm_dev *dev, struct nvm_ioctl_remove *remove) +{ + struct gen_dev *gn = dev->mp; + struct nvm_target *t; + + if (!gn) + return 1; + + mutex_lock(&gn->lock); + t = gen_find_target(gn, remove->tgtname); + if (!t) { + mutex_unlock(&gn->lock); + return 1; + } + __gen_remove_target(t); + mutex_unlock(&gn->lock); + + return 0; +} + +static int gen_get_area(struct nvm_dev *dev, sector_t *lba, sector_t len) +{ + struct gen_dev *gn = dev->mp; + struct gen_area *area, *prev, *next; sector_t begin = 0; sector_t max_sectors = (dev->sec_size * dev->total_secs) >> 9; if (len > max_sectors) return -EINVAL; - area = kmalloc(sizeof(struct gennvm_area), GFP_KERNEL); + area = kmalloc(sizeof(struct gen_area), GFP_KERNEL); if (!area) return -ENOMEM; @@ -64,10 +202,10 @@ static int gennvm_get_area(struct nvm_dev *dev, sector_t *lba, sector_t len) return 0; } -static void gennvm_put_area(struct nvm_dev *dev, sector_t begin) +static void gen_put_area(struct nvm_dev *dev, sector_t begin) { - struct gen_nvm *gn = dev->mp; - struct gennvm_area *area; + struct gen_dev *gn = dev->mp; + struct gen_area *area; spin_lock(&dev->lock); list_for_each_entry(area, &gn->area_list, list) { @@ -82,27 +220,27 @@ static void gennvm_put_area(struct nvm_dev *dev, sector_t begin) spin_unlock(&dev->lock); } -static void gennvm_blocks_free(struct nvm_dev *dev) +static void gen_blocks_free(struct nvm_dev *dev) { - struct gen_nvm *gn = dev->mp; + struct gen_dev *gn = dev->mp; struct gen_lun *lun; int i; - gennvm_for_each_lun(gn, lun, i) { + gen_for_each_lun(gn, lun, i) { if (!lun->vlun.blocks) break; vfree(lun->vlun.blocks); } } -static void gennvm_luns_free(struct nvm_dev *dev) +static void gen_luns_free(struct nvm_dev *dev) { - struct gen_nvm *gn = dev->mp; + struct gen_dev *gn = dev->mp; kfree(gn->luns); } -static int gennvm_luns_init(struct nvm_dev *dev, struct gen_nvm *gn) +static int gen_luns_init(struct nvm_dev *dev, struct gen_dev *gn) { struct gen_lun *lun; int i; @@ -111,7 +249,7 @@ static int gennvm_luns_init(struct nvm_dev *dev, struct gen_nvm *gn) if (!gn->luns) return -ENOMEM; - gennvm_for_each_lun(gn, lun, i) { + gen_for_each_lun(gn, lun, i) { spin_lock_init(&lun->vlun.lock); INIT_LIST_HEAD(&lun->free_list); INIT_LIST_HEAD(&lun->used_list); @@ -122,14 +260,11 @@ static int gennvm_luns_init(struct nvm_dev *dev, struct gen_nvm *gn) lun->vlun.lun_id = i % dev->luns_per_chnl; lun->vlun.chnl_id = i / dev->luns_per_chnl; lun->vlun.nr_free_blocks = dev->blks_per_lun; - lun->vlun.nr_open_blocks = 0; - lun->vlun.nr_closed_blocks = 0; - lun->vlun.nr_bad_blocks = 0; } return 0; } -static int gennvm_block_bb(struct gen_nvm *gn, struct ppa_addr ppa, +static int gen_block_bb(struct gen_dev *gn, struct ppa_addr ppa, u8 *blks, int nr_blks) { struct nvm_dev *dev = gn->dev; @@ -149,17 +284,16 @@ static int gennvm_block_bb(struct gen_nvm *gn, struct ppa_addr ppa, blk = &lun->vlun.blocks[i]; list_move_tail(&blk->list, &lun->bb_list); - lun->vlun.nr_bad_blocks++; lun->vlun.nr_free_blocks--; } return 0; } -static int gennvm_block_map(u64 slba, u32 nlb, __le64 *entries, void *private) +static int gen_block_map(u64 slba, u32 nlb, __le64 *entries, void *private) { struct nvm_dev *dev = private; - struct gen_nvm *gn = dev->mp; + struct gen_dev *gn = dev->mp; u64 elba = slba + nlb; struct gen_lun *lun; struct nvm_block *blk; @@ -167,7 +301,7 @@ static int gennvm_block_map(u64 slba, u32 nlb, __le64 *entries, void *private) int lun_id; if (unlikely(elba > dev->total_secs)) { - pr_err("gennvm: L2P data from device is out of bounds!\n"); + pr_err("gen: L2P data from device is out of bounds!\n"); return -EINVAL; } @@ -175,7 +309,7 @@ static int gennvm_block_map(u64 slba, u32 nlb, __le64 *entries, void *private) u64 pba = le64_to_cpu(entries[i]); if (unlikely(pba >= dev->total_secs && pba != U64_MAX)) { - pr_err("gennvm: L2P data entry is out of bounds!\n"); + pr_err("gen: L2P data entry is out of bounds!\n"); return -EINVAL; } @@ -200,16 +334,15 @@ static int gennvm_block_map(u64 slba, u32 nlb, __le64 *entries, void *private) * block state. The block is assumed to be open. */ list_move_tail(&blk->list, &lun->used_list); - blk->state = NVM_BLK_ST_OPEN; + blk->state = NVM_BLK_ST_TGT; lun->vlun.nr_free_blocks--; - lun->vlun.nr_open_blocks++; } } return 0; } -static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn) +static int gen_blocks_init(struct nvm_dev *dev, struct gen_dev *gn) { struct gen_lun *lun; struct nvm_block *block; @@ -222,7 +355,7 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn) if (!blks) return -ENOMEM; - gennvm_for_each_lun(gn, lun, lun_iter) { + gen_for_each_lun(gn, lun, lun_iter) { lun->vlun.blocks = vzalloc(sizeof(struct nvm_block) * dev->blks_per_lun); if (!lun->vlun.blocks) { @@ -256,20 +389,20 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn) ret = nvm_get_bb_tbl(dev, ppa, blks); if (ret) - pr_err("gennvm: could not get BB table\n"); + pr_err("gen: could not get BB table\n"); - ret = gennvm_block_bb(gn, ppa, blks, nr_blks); + ret = gen_block_bb(gn, ppa, blks, nr_blks); if (ret) - pr_err("gennvm: BB table map failed\n"); + pr_err("gen: BB table map failed\n"); } } if ((dev->identity.dom & NVM_RSP_L2P) && dev->ops->get_l2p_tbl) { ret = dev->ops->get_l2p_tbl(dev, 0, dev->total_secs, - gennvm_block_map, dev); + gen_block_map, dev); if (ret) { - pr_err("gennvm: could not read L2P table.\n"); - pr_warn("gennvm: default block initialization"); + pr_err("gen: could not read L2P table.\n"); + pr_warn("gen: default block initialization"); } } @@ -277,67 +410,79 @@ static int gennvm_blocks_init(struct nvm_dev *dev, struct gen_nvm *gn) return 0; } -static void gennvm_free(struct nvm_dev *dev) +static void gen_free(struct nvm_dev *dev) { - gennvm_blocks_free(dev); - gennvm_luns_free(dev); + gen_blocks_free(dev); + gen_luns_free(dev); kfree(dev->mp); dev->mp = NULL; } -static int gennvm_register(struct nvm_dev *dev) +static int gen_register(struct nvm_dev *dev) { - struct gen_nvm *gn; + struct gen_dev *gn; int ret; if (!try_module_get(THIS_MODULE)) return -ENODEV; - gn = kzalloc(sizeof(struct gen_nvm), GFP_KERNEL); + gn = kzalloc(sizeof(struct gen_dev), GFP_KERNEL); if (!gn) return -ENOMEM; gn->dev = dev; gn->nr_luns = dev->nr_luns; INIT_LIST_HEAD(&gn->area_list); + mutex_init(&gn->lock); + INIT_LIST_HEAD(&gn->targets); dev->mp = gn; - ret = gennvm_luns_init(dev, gn); + ret = gen_luns_init(dev, gn); if (ret) { - pr_err("gennvm: could not initialize luns\n"); + pr_err("gen: could not initialize luns\n"); goto err; } - ret = gennvm_blocks_init(dev, gn); + ret = gen_blocks_init(dev, gn); if (ret) { - pr_err("gennvm: could not initialize blocks\n"); + pr_err("gen: could not initialize blocks\n"); goto err; } return 1; err: - gennvm_free(dev); + gen_free(dev); module_put(THIS_MODULE); return ret; } -static void gennvm_unregister(struct nvm_dev *dev) +static void gen_unregister(struct nvm_dev *dev) { - gennvm_free(dev); + struct gen_dev *gn = dev->mp; + struct nvm_target *t, *tmp; + + mutex_lock(&gn->lock); + list_for_each_entry_safe(t, tmp, &gn->targets, list) { + if (t->dev != dev) + continue; + __gen_remove_target(t); + } + mutex_unlock(&gn->lock); + + gen_free(dev); module_put(THIS_MODULE); } -static struct nvm_block *gennvm_get_blk_unlocked(struct nvm_dev *dev, +static struct nvm_block *gen_get_blk(struct nvm_dev *dev, struct nvm_lun *vlun, unsigned long flags) { struct gen_lun *lun = container_of(vlun, struct gen_lun, vlun); struct nvm_block *blk = NULL; int is_gc = flags & NVM_IOTYPE_GC; - assert_spin_locked(&vlun->lock); - + spin_lock(&vlun->lock); if (list_empty(&lun->free_list)) { - pr_err_ratelimited("gennvm: lun %u have no free pages available", + pr_err_ratelimited("gen: lun %u have no free pages available", lun->vlun.id); goto out; } @@ -346,88 +491,58 @@ static struct nvm_block *gennvm_get_blk_unlocked(struct nvm_dev *dev, goto out; blk = list_first_entry(&lun->free_list, struct nvm_block, list); - list_move_tail(&blk->list, &lun->used_list); - blk->state = NVM_BLK_ST_OPEN; + list_move_tail(&blk->list, &lun->used_list); + blk->state = NVM_BLK_ST_TGT; lun->vlun.nr_free_blocks--; - lun->vlun.nr_open_blocks++; - out: - return blk; -} - -static struct nvm_block *gennvm_get_blk(struct nvm_dev *dev, - struct nvm_lun *vlun, unsigned long flags) -{ - struct nvm_block *blk; - - spin_lock(&vlun->lock); - blk = gennvm_get_blk_unlocked(dev, vlun, flags); spin_unlock(&vlun->lock); return blk; } -static void gennvm_put_blk_unlocked(struct nvm_dev *dev, struct nvm_block *blk) +static void gen_put_blk(struct nvm_dev *dev, struct nvm_block *blk) { struct nvm_lun *vlun = blk->lun; struct gen_lun *lun = container_of(vlun, struct gen_lun, vlun); - assert_spin_locked(&vlun->lock); - - if (blk->state & NVM_BLK_ST_OPEN) { - list_move_tail(&blk->list, &lun->free_list); - lun->vlun.nr_open_blocks--; - lun->vlun.nr_free_blocks++; - blk->state = NVM_BLK_ST_FREE; - } else if (blk->state & NVM_BLK_ST_CLOSED) { + spin_lock(&vlun->lock); + if (blk->state & NVM_BLK_ST_TGT) { list_move_tail(&blk->list, &lun->free_list); - lun->vlun.nr_closed_blocks--; lun->vlun.nr_free_blocks++; blk->state = NVM_BLK_ST_FREE; } else if (blk->state & NVM_BLK_ST_BAD) { list_move_tail(&blk->list, &lun->bb_list); - lun->vlun.nr_bad_blocks++; blk->state = NVM_BLK_ST_BAD; } else { WARN_ON_ONCE(1); - pr_err("gennvm: erroneous block type (%lu -> %u)\n", + pr_err("gen: erroneous block type (%lu -> %u)\n", blk->id, blk->state); list_move_tail(&blk->list, &lun->bb_list); - lun->vlun.nr_bad_blocks++; - blk->state = NVM_BLK_ST_BAD; } -} - -static void gennvm_put_blk(struct nvm_dev *dev, struct nvm_block *blk) -{ - struct nvm_lun *vlun = blk->lun; - - spin_lock(&vlun->lock); - gennvm_put_blk_unlocked(dev, blk); spin_unlock(&vlun->lock); } -static void gennvm_mark_blk(struct nvm_dev *dev, struct ppa_addr ppa, int type) +static void gen_mark_blk(struct nvm_dev *dev, struct ppa_addr ppa, int type) { - struct gen_nvm *gn = dev->mp; + struct gen_dev *gn = dev->mp; struct gen_lun *lun; struct nvm_block *blk; - pr_debug("gennvm: ppa (ch: %u lun: %u blk: %u pg: %u) -> %u\n", + pr_debug("gen: ppa (ch: %u lun: %u blk: %u pg: %u) -> %u\n", ppa.g.ch, ppa.g.lun, ppa.g.blk, ppa.g.pg, type); if (unlikely(ppa.g.ch > dev->nr_chnls || ppa.g.lun > dev->luns_per_chnl || ppa.g.blk > dev->blks_per_lun)) { WARN_ON_ONCE(1); - pr_err("gennvm: ppa broken (ch: %u > %u lun: %u > %u blk: %u > %u", + pr_err("gen: ppa broken (ch: %u > %u lun: %u > %u blk: %u > %u", ppa.g.ch, dev->nr_chnls, ppa.g.lun, dev->luns_per_chnl, ppa.g.blk, dev->blks_per_lun); return; } - lun = &gn->luns[ppa.g.lun * ppa.g.ch]; + lun = &gn->luns[(dev->luns_per_chnl * ppa.g.ch) + ppa.g.lun]; blk = &lun->vlun.blocks[ppa.g.blk]; /* will be moved to bb list on put_blk from target */ @@ -435,9 +550,9 @@ static void gennvm_mark_blk(struct nvm_dev *dev, struct ppa_addr ppa, int type) } /* - * mark block bad in gennvm. It is expected that the target recovers separately + * mark block bad in gen. It is expected that the target recovers separately */ -static void gennvm_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd) +static void gen_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd) { int bit = -1; int max_secs = dev->ops->max_phys_sect; @@ -447,25 +562,25 @@ static void gennvm_mark_blk_bad(struct nvm_dev *dev, struct nvm_rq *rqd) /* look up blocks and mark them as bad */ if (rqd->nr_ppas == 1) { - gennvm_mark_blk(dev, rqd->ppa_addr, NVM_BLK_ST_BAD); + gen_mark_blk(dev, rqd->ppa_addr, NVM_BLK_ST_BAD); return; } while ((bit = find_next_bit(comp_bits, max_secs, bit + 1)) < max_secs) - gennvm_mark_blk(dev, rqd->ppa_list[bit], NVM_BLK_ST_BAD); + gen_mark_blk(dev, rqd->ppa_list[bit], NVM_BLK_ST_BAD); } -static void gennvm_end_io(struct nvm_rq *rqd) +static void gen_end_io(struct nvm_rq *rqd) { struct nvm_tgt_instance *ins = rqd->ins; if (rqd->error == NVM_RSP_ERR_FAILWRITE) - gennvm_mark_blk_bad(rqd->dev, rqd); + gen_mark_blk_bad(rqd->dev, rqd); ins->tt->end_io(rqd); } -static int gennvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) +static int gen_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) { if (!dev->ops->submit_io) return -ENODEV; @@ -474,11 +589,11 @@ static int gennvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd) nvm_generic_to_addr_mode(dev, rqd); rqd->dev = dev; - rqd->end_io = gennvm_end_io; + rqd->end_io = gen_end_io; return dev->ops->submit_io(dev, rqd); } -static int gennvm_erase_blk(struct nvm_dev *dev, struct nvm_block *blk, +static int gen_erase_blk(struct nvm_dev *dev, struct nvm_block *blk, unsigned long flags) { struct ppa_addr addr = block_to_ppa(dev, blk); @@ -486,19 +601,19 @@ static int gennvm_erase_blk(struct nvm_dev *dev, struct nvm_block *blk, return nvm_erase_ppa(dev, &addr, 1); } -static int gennvm_reserve_lun(struct nvm_dev *dev, int lunid) +static int gen_reserve_lun(struct nvm_dev *dev, int lunid) { return test_and_set_bit(lunid, dev->lun_map); } -static void gennvm_release_lun(struct nvm_dev *dev, int lunid) +static void gen_release_lun(struct nvm_dev *dev, int lunid) { WARN_ON(!test_and_clear_bit(lunid, dev->lun_map)); } -static struct nvm_lun *gennvm_get_lun(struct nvm_dev *dev, int lunid) +static struct nvm_lun *gen_get_lun(struct nvm_dev *dev, int lunid) { - struct gen_nvm *gn = dev->mp; + struct gen_dev *gn = dev->mp; if (unlikely(lunid >= dev->nr_luns)) return NULL; @@ -506,66 +621,62 @@ static struct nvm_lun *gennvm_get_lun(struct nvm_dev *dev, int lunid) return &gn->luns[lunid].vlun; } -static void gennvm_lun_info_print(struct nvm_dev *dev) +static void gen_lun_info_print(struct nvm_dev *dev) { - struct gen_nvm *gn = dev->mp; + struct gen_dev *gn = dev->mp; struct gen_lun *lun; unsigned int i; - gennvm_for_each_lun(gn, lun, i) { + gen_for_each_lun(gn, lun, i) { spin_lock(&lun->vlun.lock); - pr_info("%s: lun%8u\t%u\t%u\t%u\t%u\n", - dev->name, i, - lun->vlun.nr_free_blocks, - lun->vlun.nr_open_blocks, - lun->vlun.nr_closed_blocks, - lun->vlun.nr_bad_blocks); + pr_info("%s: lun%8u\t%u\n", dev->name, i, + lun->vlun.nr_free_blocks); spin_unlock(&lun->vlun.lock); } } -static struct nvmm_type gennvm = { +static struct nvmm_type gen = { .name = "gennvm", .version = {0, 1, 0}, - .register_mgr = gennvm_register, - .unregister_mgr = gennvm_unregister, + .register_mgr = gen_register, + .unregister_mgr = gen_unregister, - .get_blk_unlocked = gennvm_get_blk_unlocked, - .put_blk_unlocked = gennvm_put_blk_unlocked, + .create_tgt = gen_create_tgt, + .remove_tgt = gen_remove_tgt, - .get_blk = gennvm_get_blk, - .put_blk = gennvm_put_blk, + .get_blk = gen_get_blk, + .put_blk = gen_put_blk, - .submit_io = gennvm_submit_io, - .erase_blk = gennvm_erase_blk, + .submit_io = gen_submit_io, + .erase_blk = gen_erase_blk, - .mark_blk = gennvm_mark_blk, + .mark_blk = gen_mark_blk, - .get_lun = gennvm_get_lun, - .reserve_lun = gennvm_reserve_lun, - .release_lun = gennvm_release_lun, - .lun_info_print = gennvm_lun_info_print, + .get_lun = gen_get_lun, + .reserve_lun = gen_reserve_lun, + .release_lun = gen_release_lun, + .lun_info_print = gen_lun_info_print, - .get_area = gennvm_get_area, - .put_area = gennvm_put_area, + .get_area = gen_get_area, + .put_area = gen_put_area, }; -static int __init gennvm_module_init(void) +static int __init gen_module_init(void) { - return nvm_register_mgr(&gennvm); + return nvm_register_mgr(&gen); } -static void gennvm_module_exit(void) +static void gen_module_exit(void) { - nvm_unregister_mgr(&gennvm); + nvm_unregister_mgr(&gen); } -module_init(gennvm_module_init); -module_exit(gennvm_module_exit); +module_init(gen_module_init); +module_exit(gen_module_exit); MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("Generic media manager for Open-Channel SSDs"); +MODULE_DESCRIPTION("General media manager for Open-Channel SSDs"); diff --git a/drivers/lightnvm/gennvm.h b/drivers/lightnvm/gennvm.h index 04d7c23cfc61..8ecfa817d21d 100644 --- a/drivers/lightnvm/gennvm.h +++ b/drivers/lightnvm/gennvm.h @@ -34,20 +34,24 @@ struct gen_lun { */ }; -struct gen_nvm { +struct gen_dev { struct nvm_dev *dev; int nr_luns; struct gen_lun *luns; struct list_head area_list; + + struct mutex lock; + struct list_head targets; }; -struct gennvm_area { +struct gen_area { struct list_head list; sector_t begin; sector_t end; /* end is excluded */ }; -#define gennvm_for_each_lun(bm, lun, i) \ + +#define gen_for_each_lun(bm, lun, i) \ for ((i) = 0, lun = &(bm)->luns[0]; \ (i) < (bm)->nr_luns; (i)++, lun = &(bm)->luns[(i)]) diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c index 2103e97a974f..37fcaadbf80c 100644 --- a/drivers/lightnvm/rrpc.c +++ b/drivers/lightnvm/rrpc.c @@ -48,7 +48,7 @@ static void rrpc_page_invalidate(struct rrpc *rrpc, struct rrpc_addr *a) } static void rrpc_invalidate_range(struct rrpc *rrpc, sector_t slba, - unsigned len) + unsigned int len) { sector_t i; @@ -96,10 +96,13 @@ static void rrpc_discard(struct rrpc *rrpc, struct bio *bio) sector_t len = bio->bi_iter.bi_size / RRPC_EXPOSED_PAGE_SIZE; struct nvm_rq *rqd; - do { + while (1) { rqd = rrpc_inflight_laddr_acquire(rrpc, slba, len); + if (rqd) + break; + schedule(); - } while (!rqd); + } if (IS_ERR(rqd)) { pr_err("rrpc: unable to acquire inflight IO\n"); @@ -172,39 +175,32 @@ static struct ppa_addr rrpc_ppa_to_gaddr(struct nvm_dev *dev, u64 addr) } /* requires lun->lock taken */ -static void rrpc_set_lun_cur(struct rrpc_lun *rlun, struct rrpc_block *rblk) +static void rrpc_set_lun_cur(struct rrpc_lun *rlun, struct rrpc_block *new_rblk, + struct rrpc_block **cur_rblk) { struct rrpc *rrpc = rlun->rrpc; - BUG_ON(!rblk); - - if (rlun->cur) { - spin_lock(&rlun->cur->lock); - WARN_ON(!block_is_full(rrpc, rlun->cur)); - spin_unlock(&rlun->cur->lock); + if (*cur_rblk) { + spin_lock(&(*cur_rblk)->lock); + WARN_ON(!block_is_full(rrpc, *cur_rblk)); + spin_unlock(&(*cur_rblk)->lock); } - rlun->cur = rblk; + *cur_rblk = new_rblk; } static struct rrpc_block *rrpc_get_blk(struct rrpc *rrpc, struct rrpc_lun *rlun, unsigned long flags) { - struct nvm_lun *lun = rlun->parent; struct nvm_block *blk; struct rrpc_block *rblk; - spin_lock(&lun->lock); - blk = nvm_get_blk_unlocked(rrpc->dev, rlun->parent, flags); + blk = nvm_get_blk(rrpc->dev, rlun->parent, flags); if (!blk) { pr_err("nvm: rrpc: cannot get new block from media manager\n"); - spin_unlock(&lun->lock); return NULL; } rblk = rrpc_get_rblk(rlun, blk->id); - list_add_tail(&rblk->list, &rlun->open_list); - spin_unlock(&lun->lock); - blk->priv = rblk; bitmap_zero(rblk->invalid_pages, rrpc->dev->sec_per_blk); rblk->next_page = 0; @@ -216,13 +212,7 @@ static struct rrpc_block *rrpc_get_blk(struct rrpc *rrpc, struct rrpc_lun *rlun, static void rrpc_put_blk(struct rrpc *rrpc, struct rrpc_block *rblk) { - struct rrpc_lun *rlun = rblk->rlun; - struct nvm_lun *lun = rlun->parent; - - spin_lock(&lun->lock); - nvm_put_blk_unlocked(rrpc->dev, rblk->parent); - list_del(&rblk->list); - spin_unlock(&lun->lock); + nvm_put_blk(rrpc->dev, rblk->parent); } static void rrpc_put_blks(struct rrpc *rrpc) @@ -342,7 +332,7 @@ try: /* Perform read to do GC */ bio->bi_iter.bi_sector = rrpc_get_sector(rev->addr); - bio->bi_rw = READ; + bio_set_op_attrs(bio, REQ_OP_READ, 0); bio->bi_private = &wait; bio->bi_end_io = rrpc_end_sync_bio; @@ -364,7 +354,7 @@ try: reinit_completion(&wait); bio->bi_iter.bi_sector = rrpc_get_sector(rev->addr); - bio->bi_rw = WRITE; + bio_set_op_attrs(bio, REQ_OP_WRITE, 0); bio->bi_private = &wait; bio->bi_end_io = rrpc_end_sync_bio; @@ -508,21 +498,11 @@ static void rrpc_gc_queue(struct work_struct *work) struct rrpc *rrpc = gcb->rrpc; struct rrpc_block *rblk = gcb->rblk; struct rrpc_lun *rlun = rblk->rlun; - struct nvm_lun *lun = rblk->parent->lun; - struct nvm_block *blk = rblk->parent; spin_lock(&rlun->lock); list_add_tail(&rblk->prio, &rlun->prio_list); spin_unlock(&rlun->lock); - spin_lock(&lun->lock); - lun->nr_open_blocks--; - lun->nr_closed_blocks++; - blk->state &= ~NVM_BLK_ST_OPEN; - blk->state |= NVM_BLK_ST_CLOSED; - list_move_tail(&rblk->list, &rlun->closed_list); - spin_unlock(&lun->lock); - mempool_free(gcb, rrpc->gcb_pool); pr_debug("nvm: block '%lu' is full, allow GC (sched)\n", rblk->parent->id); @@ -596,21 +576,20 @@ out: return addr; } -/* Simple round-robin Logical to physical address translation. - * - * Retrieve the mapping using the active append point. Then update the ap for - * the next write to the disk. +/* Map logical address to a physical page. The mapping implements a round robin + * approach and allocates a page from the next lun available. * - * Returns rrpc_addr with the physical address and block. Remember to return to - * rrpc->addr_cache when request is finished. + * Returns rrpc_addr with the physical address and block. Returns NULL if no + * blocks in the next rlun are available. */ static struct rrpc_addr *rrpc_map_page(struct rrpc *rrpc, sector_t laddr, int is_gc) { struct rrpc_lun *rlun; - struct rrpc_block *rblk; + struct rrpc_block *rblk, **cur_rblk; struct nvm_lun *lun; u64 paddr; + int gc_force = 0; rlun = rrpc_get_lun_rr(rrpc, is_gc); lun = rlun->parent; @@ -618,41 +597,65 @@ static struct rrpc_addr *rrpc_map_page(struct rrpc *rrpc, sector_t laddr, if (!is_gc && lun->nr_free_blocks < rrpc->nr_luns * 4) return NULL; - spin_lock(&rlun->lock); + /* + * page allocation steps: + * 1. Try to allocate new page from current rblk + * 2a. If succeed, proceed to map it in and return + * 2b. If fail, first try to allocate a new block from media manger, + * and then retry step 1. Retry until the normal block pool is + * exhausted. + * 3. If exhausted, and garbage collector is requesting the block, + * go to the reserved block and retry step 1. + * In the case that this fails as well, or it is not GC + * requesting, report not able to retrieve a block and let the + * caller handle further processing. + */ + spin_lock(&rlun->lock); + cur_rblk = &rlun->cur; rblk = rlun->cur; retry: paddr = rrpc_alloc_addr(rrpc, rblk); - if (paddr == ADDR_EMPTY) { - rblk = rrpc_get_blk(rrpc, rlun, 0); - if (rblk) { - rrpc_set_lun_cur(rlun, rblk); - goto retry; - } + if (paddr != ADDR_EMPTY) + goto done; - if (is_gc) { - /* retry from emergency gc block */ - paddr = rrpc_alloc_addr(rrpc, rlun->gc_cur); - if (paddr == ADDR_EMPTY) { - rblk = rrpc_get_blk(rrpc, rlun, 1); - if (!rblk) { - pr_err("rrpc: no more blocks"); - goto err; - } - - rlun->gc_cur = rblk; - paddr = rrpc_alloc_addr(rrpc, rlun->gc_cur); - } - rblk = rlun->gc_cur; - } + if (!list_empty(&rlun->wblk_list)) { +new_blk: + rblk = list_first_entry(&rlun->wblk_list, struct rrpc_block, + prio); + rrpc_set_lun_cur(rlun, rblk, cur_rblk); + list_del(&rblk->prio); + goto retry; + } + spin_unlock(&rlun->lock); + + rblk = rrpc_get_blk(rrpc, rlun, gc_force); + if (rblk) { + spin_lock(&rlun->lock); + list_add_tail(&rblk->prio, &rlun->wblk_list); + /* + * another thread might already have added a new block, + * Therefore, make sure that one is used, instead of the + * one just added. + */ + goto new_blk; } + if (unlikely(is_gc) && !gc_force) { + /* retry from emergency gc block */ + cur_rblk = &rlun->gc_cur; + rblk = rlun->gc_cur; + gc_force = 1; + spin_lock(&rlun->lock); + goto retry; + } + + pr_err("rrpc: failed to allocate new block\n"); + return NULL; +done: spin_unlock(&rlun->lock); return rrpc_update_map(rrpc, laddr, rblk, paddr); -err: - spin_unlock(&rlun->lock); - return NULL; } static void rrpc_run_gc(struct rrpc *rrpc, struct rrpc_block *rblk) @@ -850,14 +853,14 @@ static int rrpc_setup_rq(struct rrpc *rrpc, struct bio *bio, return NVM_IO_ERR; } - if (bio_rw(bio) == WRITE) + if (bio_op(bio) == REQ_OP_WRITE) return rrpc_write_ppalist_rq(rrpc, bio, rqd, flags, npages); return rrpc_read_ppalist_rq(rrpc, bio, rqd, flags, npages); } - if (bio_rw(bio) == WRITE) + if (bio_op(bio) == REQ_OP_WRITE) return rrpc_write_rq(rrpc, bio, rqd, flags); return rrpc_read_rq(rrpc, bio, rqd, flags); @@ -908,7 +911,7 @@ static blk_qc_t rrpc_make_rq(struct request_queue *q, struct bio *bio) struct nvm_rq *rqd; int err; - if (bio->bi_rw & REQ_DISCARD) { + if (bio_op(bio) == REQ_OP_DISCARD) { rrpc_discard(rrpc, bio); return BLK_QC_T_NONE; } @@ -1196,8 +1199,7 @@ static int rrpc_luns_init(struct rrpc *rrpc, int lun_begin, int lun_end) rlun->rrpc = rrpc; INIT_LIST_HEAD(&rlun->prio_list); - INIT_LIST_HEAD(&rlun->open_list); - INIT_LIST_HEAD(&rlun->closed_list); + INIT_LIST_HEAD(&rlun->wblk_list); INIT_WORK(&rlun->ws_gc, rrpc_lun_gc); spin_lock_init(&rlun->lock); @@ -1338,14 +1340,13 @@ static int rrpc_luns_configure(struct rrpc *rrpc) rblk = rrpc_get_blk(rrpc, rlun, 0); if (!rblk) goto err; - - rrpc_set_lun_cur(rlun, rblk); + rrpc_set_lun_cur(rlun, rblk, &rlun->cur); /* Emergency gc block */ rblk = rrpc_get_blk(rrpc, rlun, 1); if (!rblk) goto err; - rlun->gc_cur = rblk; + rrpc_set_lun_cur(rlun, rblk, &rlun->gc_cur); } return 0; diff --git a/drivers/lightnvm/rrpc.h b/drivers/lightnvm/rrpc.h index 87e84b5fc1cc..5e87d52cb983 100644 --- a/drivers/lightnvm/rrpc.h +++ b/drivers/lightnvm/rrpc.h @@ -56,7 +56,6 @@ struct rrpc_block { struct nvm_block *parent; struct rrpc_lun *rlun; struct list_head prio; - struct list_head list; #define MAX_INVALID_PAGES_STORAGE 8 /* Bitmap for invalid page intries */ @@ -77,13 +76,7 @@ struct rrpc_lun { struct rrpc_block *blocks; /* Reference to block allocation */ struct list_head prio_list; /* Blocks that may be GC'ed */ - struct list_head open_list; /* In-use open blocks. These are blocks - * that can be both written to and read - * from - */ - struct list_head closed_list; /* In-use closed blocks. These are - * blocks that can _only_ be read from - */ + struct list_head wblk_list; /* Queued blocks to be written to */ struct work_struct ws_gc; @@ -188,7 +181,7 @@ static inline int request_intersects(struct rrpc_inflight_rq *r, } static int __rrpc_lock_laddr(struct rrpc *rrpc, sector_t laddr, - unsigned pages, struct rrpc_inflight_rq *r) + unsigned int pages, struct rrpc_inflight_rq *r) { sector_t laddr_end = laddr + pages - 1; struct rrpc_inflight_rq *rtmp; @@ -213,7 +206,7 @@ static int __rrpc_lock_laddr(struct rrpc *rrpc, sector_t laddr, } static inline int rrpc_lock_laddr(struct rrpc *rrpc, sector_t laddr, - unsigned pages, + unsigned int pages, struct rrpc_inflight_rq *r) { BUG_ON((laddr + pages) > rrpc->nr_sects); diff --git a/drivers/lightnvm/sysblk.c b/drivers/lightnvm/sysblk.c index 994697ac786e..a75bd28aaca3 100644 --- a/drivers/lightnvm/sysblk.c +++ b/drivers/lightnvm/sysblk.c @@ -39,7 +39,8 @@ static inline int scan_ppa_idx(int row, int blkid) return (row * MAX_BLKS_PR_SYSBLK) + blkid; } -void nvm_sysblk_to_cpu(struct nvm_sb_info *info, struct nvm_system_block *sb) +static void nvm_sysblk_to_cpu(struct nvm_sb_info *info, + struct nvm_system_block *sb) { info->seqnr = be32_to_cpu(sb->seqnr); info->erase_cnt = be32_to_cpu(sb->erase_cnt); @@ -48,7 +49,8 @@ void nvm_sysblk_to_cpu(struct nvm_sb_info *info, struct nvm_system_block *sb) info->fs_ppa.ppa = be64_to_cpu(sb->fs_ppa); } -void nvm_cpu_to_sysblk(struct nvm_system_block *sb, struct nvm_sb_info *info) +static void nvm_cpu_to_sysblk(struct nvm_system_block *sb, + struct nvm_sb_info *info) { sb->magic = cpu_to_be32(NVM_SYSBLK_MAGIC); sb->seqnr = cpu_to_be32(info->seqnr); @@ -86,7 +88,7 @@ static int nvm_setup_sysblks(struct nvm_dev *dev, struct ppa_addr *sysblk_ppas) return nr_rows; } -void nvm_setup_sysblk_scan(struct nvm_dev *dev, struct sysblk_scan *s, +static void nvm_setup_sysblk_scan(struct nvm_dev *dev, struct sysblk_scan *s, struct ppa_addr *sysblk_ppas) { memset(s, 0, sizeof(struct sysblk_scan)); |