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author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-28 17:22:10 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-28 17:22:10 -0700 |
commit | d72cd4ad4174cfd2257c426ad51e4f53bcfde9c9 (patch) | |
tree | b291d1c28bbf6ce61edc3bdf022ea857414230f6 /drivers/scsi/scsi_scan.c | |
parent | 238da4d004856ac5f832899f6f3fa27c0102381f (diff) | |
parent | 7a3beeae289385f7be9f61a33a6e4f6c7e2400d3 (diff) | |
download | linux-d72cd4ad4174cfd2257c426ad51e4f53bcfde9c9.tar.gz linux-d72cd4ad4174cfd2257c426ad51e4f53bcfde9c9.tar.bz2 linux-d72cd4ad4174cfd2257c426ad51e4f53bcfde9c9.zip |
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This consists of the usual driver updates (ufs, target, tcmu,
smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx).
The major core change is using a sbitmap instead of an atomic for
queue tracking"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (412 commits)
scsi: target: tcm_fc: Fix a kernel-doc header
scsi: target: Shorten ALUA error messages
scsi: target: Fix two format specifiers
scsi: target: Compare explicitly with SAM_STAT_GOOD
scsi: sd: Introduce a new local variable in sd_check_events()
scsi: dc395x: Open-code status_byte(u8) calls
scsi: 53c700: Open-code status_byte(u8) calls
scsi: smartpqi: Remove unused functions
scsi: qla4xxx: Remove an unused function
scsi: myrs: Remove unused functions
scsi: myrb: Remove unused functions
scsi: mpt3sas: Fix two kernel-doc headers
scsi: fcoe: Suppress a compiler warning
scsi: libfc: Fix a format specifier
scsi: aacraid: Remove an unused function
scsi: core: Introduce enum scsi_disposition
scsi: core: Modify the scsi_send_eh_cmnd() return value for the SDEV_BLOCK case
scsi: core: Rename scsi_softirq_done() into scsi_complete()
scsi: core: Remove an incorrect comment
scsi: core: Make the scsi_alloc_sgtables() documentation more accurate
...
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
-rw-r--r-- | drivers/scsi/scsi_scan.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 9b73aa506382..12f54571b83e 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -215,6 +215,7 @@ static void scsi_unlock_floptical(struct scsi_device *sdev, static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, u64 lun, void *hostdata) { + unsigned int depth; struct scsi_device *sdev; int display_failure_msg = 1, ret; struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); @@ -276,8 +277,25 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, WARN_ON_ONCE(!blk_get_queue(sdev->request_queue)); sdev->request_queue->queuedata = sdev; - scsi_change_queue_depth(sdev, sdev->host->cmd_per_lun ? - sdev->host->cmd_per_lun : 1); + depth = sdev->host->cmd_per_lun ?: 1; + + /* + * Use .can_queue as budget map's depth because we have to + * support adjusting queue depth from sysfs. Meantime use + * default device queue depth to figure out sbitmap shift + * since we use this queue depth most of times. + */ + if (sbitmap_init_node(&sdev->budget_map, + scsi_device_max_queue_depth(sdev), + sbitmap_calculate_shift(depth), + GFP_KERNEL, sdev->request_queue->node, + false, true)) { + put_device(&starget->dev); + kfree(sdev); + goto out; + } + + scsi_change_queue_depth(sdev, depth); scsi_sysfs_device_initialize(sdev); @@ -979,6 +997,7 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, scsi_attach_vpd(sdev); sdev->max_queue_depth = sdev->queue_depth; + WARN_ON_ONCE(sdev->max_queue_depth > sdev->budget_map.depth); sdev->sdev_bflags = *bflags; /* |