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path: root/drivers/scsi/sd.c
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Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r--drivers/scsi/sd.c109
1 files changed, 12 insertions, 97 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 73e6f5f0f37c..a390679cf458 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -122,7 +122,6 @@ static void scsi_disk_release(struct device *cdev);
static DEFINE_IDA(sd_index_ida);
static struct kmem_cache *sd_cdb_cache;
-static mempool_t *sd_cdb_pool;
static mempool_t *sd_page_pool;
static struct lock_class_key sd_bio_compl_lkclass;
@@ -1002,13 +1001,13 @@ static void sd_config_write_same(struct scsi_disk *sdkp)
* Reporting a maximum number of blocks that is not aligned
* on the device physical size would cause a large write same
* request to be split into physically unaligned chunks by
- * __blkdev_issue_write_zeroes() and __blkdev_issue_write_same()
- * even if the caller of these functions took care to align the
- * large request. So make sure the maximum reported is aligned
- * to the device physical block size. This is only an optional
- * optimization for regular disks, but this is mandatory to
- * avoid failure of large write same requests directed at
- * sequential write required zones of host-managed ZBC disks.
+ * __blkdev_issue_write_zeroes() even if the caller of this
+ * functions took care to align the large request. So make sure
+ * the maximum reported is aligned to the device physical block
+ * size. This is only an optional optimization for regular
+ * disks, but this is mandatory to avoid failure of large write
+ * same requests directed at sequential write required zones of
+ * host-managed ZBC disks.
*/
sdkp->max_ws_blocks =
round_down(sdkp->max_ws_blocks,
@@ -1017,68 +1016,10 @@ static void sd_config_write_same(struct scsi_disk *sdkp)
}
out:
- blk_queue_max_write_same_sectors(q, sdkp->max_ws_blocks *
- (logical_block_size >> 9));
blk_queue_max_write_zeroes_sectors(q, sdkp->max_ws_blocks *
(logical_block_size >> 9));
}
-/**
- * sd_setup_write_same_cmnd - write the same data to multiple blocks
- * @cmd: command to prepare
- *
- * Will set up either WRITE SAME(10) or WRITE SAME(16) depending on
- * the preference indicated by the target device.
- **/
-static blk_status_t sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
-{
- struct request *rq = scsi_cmd_to_rq(cmd);
- struct scsi_device *sdp = cmd->device;
- struct scsi_disk *sdkp = scsi_disk(rq->q->disk);
- struct bio *bio = rq->bio;
- u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq));
- u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq));
- blk_status_t ret;
-
- if (sdkp->device->no_write_same)
- return BLK_STS_TARGET;
-
- BUG_ON(bio_offset(bio) || bio_iovec(bio).bv_len != sdp->sector_size);
-
- rq->timeout = SD_WRITE_SAME_TIMEOUT;
-
- if (sdkp->ws16 || lba > 0xffffffff || nr_blocks > 0xffff) {
- cmd->cmd_len = 16;
- cmd->cmnd[0] = WRITE_SAME_16;
- put_unaligned_be64(lba, &cmd->cmnd[2]);
- put_unaligned_be32(nr_blocks, &cmd->cmnd[10]);
- } else {
- cmd->cmd_len = 10;
- cmd->cmnd[0] = WRITE_SAME;
- put_unaligned_be32(lba, &cmd->cmnd[2]);
- put_unaligned_be16(nr_blocks, &cmd->cmnd[7]);
- }
-
- cmd->transfersize = sdp->sector_size;
- cmd->allowed = sdkp->max_retries;
-
- /*
- * For WRITE SAME the data transferred via the DATA OUT buffer is
- * different from the amount of data actually written to the target.
- *
- * We set up __data_len to the amount of data transferred via the
- * DATA OUT buffer so that blk_rq_map_sg sets up the proper S/G list
- * to transfer a single sector of data first, but then reset it to
- * the amount of data to be written right after so that the I/O path
- * knows how much to actually write.
- */
- rq->__data_len = sdp->sector_size;
- ret = scsi_alloc_sgtables(cmd);
- rq->__data_len = blk_rq_bytes(rq);
-
- return ret;
-}
-
static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
{
struct request *rq = scsi_cmd_to_rq(cmd);
@@ -1100,13 +1041,7 @@ static blk_status_t sd_setup_rw32_cmnd(struct scsi_cmnd *cmd, bool write,
sector_t lba, unsigned int nr_blocks,
unsigned char flags)
{
- cmd->cmnd = mempool_alloc(sd_cdb_pool, GFP_ATOMIC);
- if (unlikely(cmd->cmnd == NULL))
- return BLK_STS_RESOURCE;
-
cmd->cmd_len = SD_EXT_CDB_SIZE;
- memset(cmd->cmnd, 0, cmd->cmd_len);
-
cmd->cmnd[0] = VARIABLE_LENGTH_CMD;
cmd->cmnd[7] = 0x18; /* Additional CDB len */
cmd->cmnd[9] = write ? WRITE_32 : READ_32;
@@ -1311,8 +1246,6 @@ static blk_status_t sd_init_command(struct scsi_cmnd *cmd)
}
case REQ_OP_WRITE_ZEROES:
return sd_setup_write_zeroes_cmnd(cmd);
- case REQ_OP_WRITE_SAME:
- return sd_setup_write_same_cmnd(cmd);
case REQ_OP_FLUSH:
return sd_setup_flush_cmnd(cmd);
case REQ_OP_READ:
@@ -1340,17 +1273,9 @@ static blk_status_t sd_init_command(struct scsi_cmnd *cmd)
static void sd_uninit_command(struct scsi_cmnd *SCpnt)
{
struct request *rq = scsi_cmd_to_rq(SCpnt);
- u8 *cmnd;
if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
mempool_free(rq->special_vec.bv_page, sd_page_pool);
-
- if (SCpnt->cmnd != scsi_req(rq)->cmd) {
- cmnd = SCpnt->cmnd;
- SCpnt->cmnd = NULL;
- SCpnt->cmd_len = 0;
- mempool_free(cmnd, sd_cdb_pool);
- }
}
static bool sd_need_revalidate(struct block_device *bdev,
@@ -2012,7 +1937,6 @@ static int sd_done(struct scsi_cmnd *SCpnt)
switch (req_op(req)) {
case REQ_OP_DISCARD:
case REQ_OP_WRITE_ZEROES:
- case REQ_OP_WRITE_SAME:
case REQ_OP_ZONE_RESET:
case REQ_OP_ZONE_RESET_ALL:
case REQ_OP_ZONE_OPEN:
@@ -3691,7 +3615,8 @@ static int sd_suspend_common(struct device *dev, bool ignore_stop_errors)
return 0;
if (sdkp->WCE && sdkp->media_present) {
- sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n");
+ if (!sdkp->device->silence_suspend)
+ sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n");
ret = sd_sync_cache(sdkp, &sshdr);
if (ret) {
@@ -3713,7 +3638,8 @@ static int sd_suspend_common(struct device *dev, bool ignore_stop_errors)
}
if (sdkp->device->manage_start_stop) {
- sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n");
+ if (!sdkp->device->silence_suspend)
+ sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n");
/* an error is not worth aborting a system sleep */
ret = sd_start_stop_device(sdkp, 0);
if (ignore_stop_errors)
@@ -3819,18 +3745,11 @@ static int __init init_sd(void)
goto err_out_class;
}
- sd_cdb_pool = mempool_create_slab_pool(SD_MEMPOOL_SIZE, sd_cdb_cache);
- if (!sd_cdb_pool) {
- printk(KERN_ERR "sd: can't init extended cdb pool\n");
- err = -ENOMEM;
- goto err_out_cache;
- }
-
sd_page_pool = mempool_create_page_pool(SD_MEMPOOL_SIZE, 0);
if (!sd_page_pool) {
printk(KERN_ERR "sd: can't init discard page pool\n");
err = -ENOMEM;
- goto err_out_ppool;
+ goto err_out_cache;
}
err = scsi_register_driver(&sd_template.gendrv);
@@ -3842,9 +3761,6 @@ static int __init init_sd(void)
err_out_driver:
mempool_destroy(sd_page_pool);
-err_out_ppool:
- mempool_destroy(sd_cdb_pool);
-
err_out_cache:
kmem_cache_destroy(sd_cdb_cache);
@@ -3868,7 +3784,6 @@ static void __exit exit_sd(void)
SCSI_LOG_HLQUEUE(3, printk("exit_sd: exiting sd driver\n"));
scsi_unregister_driver(&sd_template.gendrv);
- mempool_destroy(sd_cdb_pool);
mempool_destroy(sd_page_pool);
kmem_cache_destroy(sd_cdb_cache);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-27 19:23:24 +0300