diff options
Diffstat (limited to '')
| -rw-r--r-- | block/bio.c | 9 | ||||
| -rw-r--r-- | block/blk-iocost.c | 7 | ||||
| -rw-r--r-- | block/blk-mq.c | 16 | ||||
| -rw-r--r-- | block/blk-settings.c | 41 | ||||
| -rw-r--r-- | block/blk-stat.c | 2 | ||||
| -rw-r--r-- | block/blk-sysfs.c | 8 | ||||
| -rw-r--r-- | block/ioctl.c | 16 | ||||
| -rw-r--r-- | block/opal_proto.h | 1 | ||||
| -rw-r--r-- | block/sed-opal.c | 6 |
9 files changed, 94 insertions, 12 deletions
diff --git a/block/bio.c b/block/bio.c index 6d6e7b96b..6f7a1aa9e 100644 --- a/block/bio.c +++ b/block/bio.c @@ -770,7 +770,7 @@ static bool bio_try_merge_hw_seg(struct request_queue *q, struct bio *bio, if ((addr1 | mask) != (addr2 | mask)) return false; - if (bv->bv_len + len > queue_max_segment_size(q)) + if (len > queue_max_segment_size(q) - bv->bv_len) return false; return __bio_try_merge_page(bio, page, len, offset, same_page); } @@ -954,7 +954,7 @@ void bio_release_pages(struct bio *bio, bool mark_dirty) return; bio_for_each_segment_all(bvec, bio, iter_all) { - if (mark_dirty && !PageCompound(bvec->bv_page)) + if (mark_dirty) set_page_dirty_lock(bvec->bv_page); put_page(bvec->bv_page); } @@ -1326,8 +1326,7 @@ void bio_set_pages_dirty(struct bio *bio) struct bvec_iter_all iter_all; bio_for_each_segment_all(bvec, bio, iter_all) { - if (!PageCompound(bvec->bv_page)) - set_page_dirty_lock(bvec->bv_page); + set_page_dirty_lock(bvec->bv_page); } } @@ -1375,7 +1374,7 @@ void bio_check_pages_dirty(struct bio *bio) struct bvec_iter_all iter_all; bio_for_each_segment_all(bvec, bio, iter_all) { - if (!PageDirty(bvec->bv_page) && !PageCompound(bvec->bv_page)) + if (!PageDirty(bvec->bv_page)) goto defer; } diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 7ba7c4e4e..63a8fb456 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -1296,6 +1296,13 @@ static bool iocg_kick_delay(struct ioc_gq *iocg, struct ioc_now *now) lockdep_assert_held(&iocg->waitq.lock); + /* + * If the delay is set by another CPU, we may be in the past. No need to + * change anything if so. This avoids decay calculation underflow. + */ + if (time_before64(now->now, iocg->delay_at)) + return false; + /* calculate the current delay in effect - 1/2 every second */ tdelta = now->now - iocg->delay_at; if (iocg->delay) diff --git a/block/blk-mq.c b/block/blk-mq.c index e153a36c9..a7a31d709 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1189,6 +1189,22 @@ static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx *hctx, __add_wait_queue(wq, wait); /* + * Add one explicit barrier since blk_mq_get_driver_tag() may + * not imply barrier in case of failure. + * + * Order adding us to wait queue and allocating driver tag. + * + * The pair is the one implied in sbitmap_queue_wake_up() which + * orders clearing sbitmap tag bits and waitqueue_active() in + * __sbitmap_queue_wake_up(), since waitqueue_active() is lockless + * + * Otherwise, re-order of adding wait queue and getting driver tag + * may cause __sbitmap_queue_wake_up() to wake up nothing because + * the waitqueue_active() may not observe us in wait queue. + */ + smp_mb(); + + /* * It's possible that a tag was freed in the window between the * allocation failure and adding the hardware queue to the wait * queue. diff --git a/block/blk-settings.c b/block/blk-settings.c index c3aa7f8ee..ebd373469 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -60,6 +60,7 @@ void blk_set_default_limits(struct queue_limits *lim) lim->io_opt = 0; lim->misaligned = 0; lim->zoned = BLK_ZONED_NONE; + lim->zone_write_granularity = 0; } EXPORT_SYMBOL(blk_set_default_limits); @@ -354,6 +355,28 @@ void blk_queue_physical_block_size(struct request_queue *q, unsigned int size) EXPORT_SYMBOL(blk_queue_physical_block_size); /** + * blk_queue_zone_write_granularity - set zone write granularity for the queue + * @q: the request queue for the zoned device + * @size: the zone write granularity size, in bytes + * + * Description: + * This should be set to the lowest possible size allowing to write in + * sequential zones of a zoned block device. + */ +void blk_queue_zone_write_granularity(struct request_queue *q, + unsigned int size) +{ + if (WARN_ON_ONCE(!blk_queue_is_zoned(q))) + return; + + q->limits.zone_write_granularity = size; + + if (q->limits.zone_write_granularity < q->limits.logical_block_size) + q->limits.zone_write_granularity = q->limits.logical_block_size; +} +EXPORT_SYMBOL_GPL(blk_queue_zone_write_granularity); + +/** * blk_queue_alignment_offset - set physical block alignment offset * @q: the request queue for the device * @offset: alignment offset in bytes @@ -630,7 +653,13 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, t->discard_granularity; } + t->zone_write_granularity = max(t->zone_write_granularity, + b->zone_write_granularity); t->zoned = max(t->zoned, b->zoned); + if (!t->zoned) { + t->zone_write_granularity = 0; + t->max_zone_append_sectors = 0; + } return ret; } EXPORT_SYMBOL(blk_stack_limits); @@ -846,6 +875,8 @@ EXPORT_SYMBOL_GPL(blk_queue_can_use_dma_map_merging); */ void blk_queue_set_zoned(struct gendisk *disk, enum blk_zoned_model model) { + struct request_queue *q = disk->queue; + switch (model) { case BLK_ZONED_HM: /* @@ -874,7 +905,15 @@ void blk_queue_set_zoned(struct gendisk *disk, enum blk_zoned_model model) break; } - disk->queue->limits.zoned = model; + q->limits.zoned = model; + if (model != BLK_ZONED_NONE) { + /* + * Set the zone write granularity to the device logical block + * size by default. The driver can change this value if needed. + */ + blk_queue_zone_write_granularity(q, + queue_logical_block_size(q)); + } } EXPORT_SYMBOL_GPL(blk_queue_set_zoned); diff --git a/block/blk-stat.c b/block/blk-stat.c index ae3dd1fb8..6e602f9b9 100644 --- a/block/blk-stat.c +++ b/block/blk-stat.c @@ -28,7 +28,7 @@ void blk_rq_stat_init(struct blk_rq_stat *stat) /* src is a per-cpu stat, mean isn't initialized */ void blk_rq_stat_sum(struct blk_rq_stat *dst, struct blk_rq_stat *src) { - if (!src->nr_samples) + if (dst->nr_samples + src->nr_samples <= dst->nr_samples) return; dst->min = min(dst->min, src->min); diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 9174137a9..ddf23bf3e 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -219,6 +219,12 @@ static ssize_t queue_write_zeroes_max_show(struct request_queue *q, char *page) (unsigned long long)q->limits.max_write_zeroes_sectors << 9); } +static ssize_t queue_zone_write_granularity_show(struct request_queue *q, + char *page) +{ + return queue_var_show(queue_zone_write_granularity(q), page); +} + static ssize_t queue_zone_append_max_show(struct request_queue *q, char *page) { unsigned long long max_sectors = q->limits.max_zone_append_sectors; @@ -585,6 +591,7 @@ QUEUE_RO_ENTRY(queue_discard_zeroes_data, "discard_zeroes_data"); QUEUE_RO_ENTRY(queue_write_same_max, "write_same_max_bytes"); QUEUE_RO_ENTRY(queue_write_zeroes_max, "write_zeroes_max_bytes"); QUEUE_RO_ENTRY(queue_zone_append_max, "zone_append_max_bytes"); +QUEUE_RO_ENTRY(queue_zone_write_granularity, "zone_write_granularity"); QUEUE_RO_ENTRY(queue_zoned, "zoned"); QUEUE_RO_ENTRY(queue_nr_zones, "nr_zones"); @@ -639,6 +646,7 @@ static struct attribute *queue_attrs[] = { &queue_write_same_max_entry.attr, &queue_write_zeroes_max_entry.attr, &queue_zone_append_max_entry.attr, + &queue_zone_write_granularity_entry.attr, &queue_nonrot_entry.attr, &queue_zoned_entry.attr, &queue_nr_zones_entry.attr, diff --git a/block/ioctl.c b/block/ioctl.c index e7eed7dad..bc97698e0 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -17,7 +17,7 @@ static int blkpg_do_ioctl(struct block_device *bdev, struct blkpg_partition __user *upart, int op) { struct blkpg_partition p; - long long start, length; + sector_t start, length; if (!capable(CAP_SYS_ADMIN)) return -EACCES; @@ -32,6 +32,12 @@ static int blkpg_do_ioctl(struct block_device *bdev, if (op == BLKPG_DEL_PARTITION) return bdev_del_partition(bdev, p.pno); + if (p.start < 0 || p.length <= 0 || p.start + p.length < 0) + return -EINVAL; + /* Check that the partition is aligned to the block size */ + if (!IS_ALIGNED(p.start | p.length, bdev_logical_block_size(bdev))) + return -EINVAL; + start = p.start >> SECTOR_SHIFT; length = p.length >> SECTOR_SHIFT; @@ -46,9 +52,6 @@ static int blkpg_do_ioctl(struct block_device *bdev, switch (op) { case BLKPG_ADD_PARTITION: - /* check if partition is aligned to blocksize */ - if (p.start & (bdev_logical_block_size(bdev) - 1)) - return -EINVAL; return bdev_add_partition(bdev, p.pno, start, length); case BLKPG_RESIZE_PARTITION: return bdev_resize_partition(bdev, p.pno, start, length); @@ -405,6 +408,11 @@ static int blkdev_roset(struct block_device *bdev, fmode_t mode, return ret; if (get_user(n, (int __user *)arg)) return -EFAULT; + if (bdev->bd_disk->fops->set_read_only) { + ret = bdev->bd_disk->fops->set_read_only(bdev, n); + if (ret) + return ret; + } set_device_ro(bdev, n); return 0; } diff --git a/block/opal_proto.h b/block/opal_proto.h index b486b3ec7..a50191bdd 100644 --- a/block/opal_proto.h +++ b/block/opal_proto.h @@ -66,6 +66,7 @@ enum opal_response_token { #define SHORT_ATOM_BYTE 0xBF #define MEDIUM_ATOM_BYTE 0xDF #define LONG_ATOM_BYTE 0xE3 +#define EMPTY_ATOM_BYTE 0xFF #define OPAL_INVAL_PARAM 12 #define OPAL_MANUFACTURED_INACTIVE 0x08 diff --git a/block/sed-opal.c b/block/sed-opal.c index 0ac5a4f3f..00e4d23ac 100644 --- a/block/sed-opal.c +++ b/block/sed-opal.c @@ -895,16 +895,20 @@ static int response_parse(const u8 *buf, size_t length, token_length = response_parse_medium(iter, pos); else if (pos[0] <= LONG_ATOM_BYTE) /* long atom */ token_length = response_parse_long(iter, pos); + else if (pos[0] == EMPTY_ATOM_BYTE) /* empty atom */ + token_length = 1; else /* TOKEN */ token_length = response_parse_token(iter, pos); if (token_length < 0) return token_length; + if (pos[0] != EMPTY_ATOM_BYTE) + num_entries++; + pos += token_length; total -= token_length; iter++; - num_entries++; } resp->num = num_entries; |