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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-28 17:22:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-28 17:22:10 -0700 |
| commit | d72cd4ad4174cfd2257c426ad51e4f53bcfde9c9 (patch) | |
| tree | b291d1c28bbf6ce61edc3bdf022ea857414230f6 /drivers/scsi/scsi.c | |
| parent | 238da4d004856ac5f832899f6f3fa27c0102381f (diff) | |
| parent | 7a3beeae289385f7be9f61a33a6e4f6c7e2400d3 (diff) | |
| download | linux-d72cd4ad4174cfd2257c426ad51e4f53bcfde9c9.tar.gz | |
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.c')
| -rw-r--r-- | drivers/scsi/scsi.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 24619c3bebd5..e9e2f0e15ac8 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -214,6 +214,15 @@ void scsi_finish_command(struct scsi_cmnd *cmd) scsi_io_completion(cmd, good_bytes); } + +/* + * 1024 is big enough for saturating the fast scsi LUN now + */ +int scsi_device_max_queue_depth(struct scsi_device *sdev) +{ + return max_t(int, sdev->host->can_queue, 1024); +} + /** * scsi_change_queue_depth - change a device's queue depth * @sdev: SCSI Device in question @@ -223,6 +232,8 @@ void scsi_finish_command(struct scsi_cmnd *cmd) */ int scsi_change_queue_depth(struct scsi_device *sdev, int depth) { + depth = min_t(int, depth, scsi_device_max_queue_depth(sdev)); + if (depth > 0) { sdev->queue_depth = depth; wmb(); @@ -231,6 +242,8 @@ int scsi_change_queue_depth(struct scsi_device *sdev, int depth) if (sdev->request_queue) blk_set_queue_depth(sdev->request_queue, depth); + sbitmap_resize(&sdev->budget_map, sdev->queue_depth); + return sdev->queue_depth; } EXPORT_SYMBOL(scsi_change_queue_depth); |