diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-01 18:49:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-01 18:49:04 -0700 |
| commit | 1a0b6abaea78f73d9bc0a2f6df2d9e4c917cade1 (patch) | |
| tree | faae6f0b72b00a0a4d44cadc607e576e1954a5bc /include/scsi/libiscsi.h | |
| parent | 3e75c6de1ac33fe3500f44573d9212dc82c99f59 (diff) | |
| parent | b2bff6ceb61a9a21294f04057d30c9bb4910a88f (diff) | |
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull first round of SCSI updates from James Bottomley:
"This patch consists of the usual driver updates (megaraid_sas,
scsi_debug, qla2xxx, qla4xxx, lpfc, bnx2fc, be2iscsi, hpsa, ipr) plus
an assortment of minor fixes and the first precursors of SCSI-MQ (the
code path simplifications) and the bug fix for the USB oops on remove
(which involves an infrastructure change, so is sent via the main tree
with a delayed backport after a cycle in which it is shown to
introduce no new bugs)"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (196 commits)
[SCSI] sd: Quiesce mode sense error messages
[SCSI] add support for per-host cmd pools
[SCSI] simplify command allocation and freeing a bit
[SCSI] megaraid: simplify internal command handling
[SCSI] ses: Use vpd information from scsi_device
[SCSI] Add EVPD page 0x83 and 0x80 to sysfs
[SCSI] Return VPD page length in scsi_vpd_inquiry()
[SCSI] scsi_sysfs: Implement 'is_visible' callback
[SCSI] hpsa: update driver version to 3.4.4-1
[SCSI] hpsa: fix bad endif placement in RAID 5 mapper code
[SCSI] qla2xxx: Fix build errors related to invalid print fields on some architectures.
[SCSI] bfa: Replace large udelay() with mdelay()
[SCSI] vmw_pvscsi: Some improvements in pvscsi driver.
[SCSI] vmw_pvscsi: Add support for I/O requests coalescing.
[SCSI] vmw_pvscsi: Fix pvscsi_abort() function.
[SCSI] remove deprecated IRQF_DISABLED from SCSI
[SCSI] bfa: Updating Maintainers email ids
[SCSI] ipr: Add new CCIN definition for Grand Canyon support
[SCSI] ipr: Format HCAM overlay ID 0x21
[SCSI] ipr: Use pci_enable_msi_range() and pci_enable_msix_range()
...
Diffstat (limited to 'include/scsi/libiscsi.h')
| -rw-r--r-- | include/scsi/libiscsi.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h index 309f51336fb9..7221a24e821b 100644 --- a/include/scsi/libiscsi.h +++ b/include/scsi/libiscsi.h @@ -327,12 +327,19 @@ struct iscsi_session { struct iscsi_transport *tt; struct Scsi_Host *host; struct iscsi_conn *leadconn; /* leading connection */ - spinlock_t lock; /* protects session state, * - * sequence numbers, * + /* Between the forward and the backward locks exists a strict locking + * hierarchy. The mutual exclusion zone protected by the forward lock + * can enclose the mutual exclusion zone protected by the backward lock + * but not vice versa. + */ + spinlock_t frwd_lock; /* protects session state, * + * cmdsn, queued_cmdsn * * session resources: * - * - cmdpool, * - * - mgmtpool, * - * - r2tpool */ + * - cmdpool kfifo_out , * + * - mgmtpool, */ + spinlock_t back_lock; /* protects cmdsn_exp * + * cmdsn_max, * + * cmdpool kfifo_in */ int state; /* session state */ int age; /* counts session re-opens */ |