summaryrefslogtreecommitdiffstats
path: root/drivers/block
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/nbd.c12
-rw-r--r--drivers/block/virtio_blk.c7
-rw-r--r--drivers/block/xen-blkfront.c22
-rw-r--r--drivers/block/zram/zram_drv.c19
4 files changed, 36 insertions, 24 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 38c576f76d36..9fd06eeb1a17 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -271,7 +271,7 @@ static inline int sock_send_bvec(struct nbd_device *nbd, int index,
static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
{
struct request *req = blk_mq_rq_from_pdu(cmd);
- int result, flags;
+ int result;
struct nbd_request request;
unsigned long size = blk_rq_bytes(req);
struct bio *bio;
@@ -310,7 +310,6 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
if (type != NBD_CMD_WRITE)
return 0;
- flags = 0;
bio = req->bio;
while (bio) {
struct bio *next = bio->bi_next;
@@ -319,9 +318,8 @@ static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
bio_for_each_segment(bvec, bio, iter) {
bool is_last = !next && bio_iter_last(bvec, iter);
+ int flags = is_last ? 0 : MSG_MORE;
- if (is_last)
- flags = MSG_MORE;
dev_dbg(nbd_to_dev(nbd), "request %p: sending %d bytes data\n",
cmd, bvec.bv_len);
result = sock_send_bvec(nbd, index, &bvec, flags);
@@ -1042,6 +1040,7 @@ static int __init nbd_init(void)
return -ENOMEM;
for (i = 0; i < nbds_max; i++) {
+ struct request_queue *q;
struct gendisk *disk = alloc_disk(1 << part_shift);
if (!disk)
goto out;
@@ -1067,12 +1066,13 @@ static int __init nbd_init(void)
* every gendisk to have its very own request_queue struct.
* These structs are big so we dynamically allocate them.
*/
- disk->queue = blk_mq_init_queue(&nbd_dev[i].tag_set);
- if (!disk->queue) {
+ q = blk_mq_init_queue(&nbd_dev[i].tag_set);
+ if (IS_ERR(q)) {
blk_mq_free_tag_set(&nbd_dev[i].tag_set);
put_disk(disk);
goto out;
}
+ disk->queue = q;
/*
* Tell the block layer that we are not a rotational device
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 5545a679abd8..10332c24f961 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -56,6 +56,7 @@ struct virtblk_req {
struct virtio_blk_outhdr out_hdr;
struct virtio_scsi_inhdr in_hdr;
u8 status;
+ u8 sense[SCSI_SENSE_BUFFERSIZE];
struct scatterlist sg[];
};
@@ -102,7 +103,8 @@ static int __virtblk_add_req(struct virtqueue *vq,
}
if (type == cpu_to_virtio32(vq->vdev, VIRTIO_BLK_T_SCSI_CMD)) {
- sg_init_one(&sense, vbr->req->sense, SCSI_SENSE_BUFFERSIZE);
+ memcpy(vbr->sense, vbr->req->sense, SCSI_SENSE_BUFFERSIZE);
+ sg_init_one(&sense, vbr->sense, SCSI_SENSE_BUFFERSIZE);
sgs[num_out + num_in++] = &sense;
sg_init_one(&inhdr, &vbr->in_hdr, sizeof(vbr->in_hdr));
sgs[num_out + num_in++] = &inhdr;
@@ -628,11 +630,12 @@ static int virtblk_probe(struct virtio_device *vdev)
if (err)
goto out_put_disk;
- q = vblk->disk->queue = blk_mq_init_queue(&vblk->tag_set);
+ q = blk_mq_init_queue(&vblk->tag_set);
if (IS_ERR(q)) {
err = -ENOMEM;
goto out_free_tags;
}
+ vblk->disk->queue = q;
q->queuedata = vblk;
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index b2bdfa81f929..265f1a7072e9 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -197,13 +197,13 @@ struct blkfront_info
/* Number of pages per ring buffer. */
unsigned int nr_ring_pages;
struct request_queue *rq;
- unsigned int feature_flush;
- unsigned int feature_fua;
+ unsigned int feature_flush:1;
+ unsigned int feature_fua:1;
unsigned int feature_discard:1;
unsigned int feature_secdiscard:1;
+ unsigned int feature_persistent:1;
unsigned int discard_granularity;
unsigned int discard_alignment;
- unsigned int feature_persistent:1;
/* Number of 4KB segments handled */
unsigned int max_indirect_segments;
int is_ready;
@@ -2223,7 +2223,7 @@ static int blkfront_setup_indirect(struct blkfront_ring_info *rinfo)
}
else
grants = info->max_indirect_segments;
- psegs = grants / GRANTS_PER_PSEG;
+ psegs = DIV_ROUND_UP(grants, GRANTS_PER_PSEG);
err = fill_grant_buffer(rinfo,
(grants + INDIRECT_GREFS(grants)) * BLK_RING_SIZE(info));
@@ -2323,13 +2323,16 @@ static void blkfront_gather_backend_features(struct blkfront_info *info)
blkfront_setup_discard(info);
info->feature_persistent =
- xenbus_read_unsigned(info->xbdev->otherend,
- "feature-persistent", 0);
+ !!xenbus_read_unsigned(info->xbdev->otherend,
+ "feature-persistent", 0);
indirect_segments = xenbus_read_unsigned(info->xbdev->otherend,
"feature-max-indirect-segments", 0);
- info->max_indirect_segments = min(indirect_segments,
- xen_blkif_max_segments);
+ if (indirect_segments > xen_blkif_max_segments)
+ indirect_segments = xen_blkif_max_segments;
+ if (indirect_segments <= BLKIF_MAX_SEGMENTS_PER_REQUEST)
+ indirect_segments = 0;
+ info->max_indirect_segments = indirect_segments;
}
/*
@@ -2652,6 +2655,9 @@ static int __init xlblk_init(void)
if (!xen_domain())
return -ENODEV;
+ if (xen_blkif_max_segments < BLKIF_MAX_SEGMENTS_PER_REQUEST)
+ xen_blkif_max_segments = BLKIF_MAX_SEGMENTS_PER_REQUEST;
+
if (xen_blkif_max_ring_order > XENBUS_MAX_RING_GRANT_ORDER) {
pr_info("Invalid max_ring_order (%d), will use default max: %d.\n",
xen_blkif_max_ring_order, XENBUS_MAX_RING_GRANT_ORDER);
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 15f58ab44d0b..e5ab7d9e8c45 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -25,6 +25,7 @@
#include <linux/genhd.h>
#include <linux/highmem.h>
#include <linux/slab.h>
+#include <linux/backing-dev.h>
#include <linux/string.h>
#include <linux/vmalloc.h>
#include <linux/err.h>
@@ -112,6 +113,14 @@ static inline bool is_partial_io(struct bio_vec *bvec)
return bvec->bv_len != PAGE_SIZE;
}
+static void zram_revalidate_disk(struct zram *zram)
+{
+ revalidate_disk(zram->disk);
+ /* revalidate_disk reset the BDI_CAP_STABLE_WRITES so set again */
+ zram->disk->queue->backing_dev_info.capabilities |=
+ BDI_CAP_STABLE_WRITES;
+}
+
/*
* Check if request is within bounds and aligned on zram logical blocks.
*/
@@ -1095,15 +1104,9 @@ static ssize_t disksize_store(struct device *dev,
zram->comp = comp;
zram->disksize = disksize;
set_capacity(zram->disk, zram->disksize >> SECTOR_SHIFT);
+ zram_revalidate_disk(zram);
up_write(&zram->init_lock);
- /*
- * Revalidate disk out of the init_lock to avoid lockdep splat.
- * It's okay because disk's capacity is protected by init_lock
- * so that revalidate_disk always sees up-to-date capacity.
- */
- revalidate_disk(zram->disk);
-
return len;
out_destroy_comp:
@@ -1149,7 +1152,7 @@ static ssize_t reset_store(struct device *dev,
/* Make sure all the pending I/O are finished */
fsync_bdev(bdev);
zram_reset_device(zram);
- revalidate_disk(zram->disk);
+ zram_revalidate_disk(zram);
bdput(bdev);
mutex_lock(&bdev->bd_mutex);
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-09 13:07:42 +0100