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SCSI fixes on 20180627

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Three small bug fixes (barrier elimination, memory leak on unload,
 spinlock recursion) and a technical enhancement left over from the
 merge window: the TCMU read length support is required for tape
 devices read when the length of the read is greater than the tape
 block size.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Three small bug fixes (barrier elimination, memory leak on unload,
  spinlock recursion) and a technical enhancement left over from the
  merge window: the TCMU read length support is required for tape
  devices read when the length of the read is greater than the tape
  block size"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: scsi_debug: Fix memory leak on module unload
  scsi: qla2xxx: Spinlock recursion in qla_target
  scsi: ipr: Eliminate duplicate barriers
  scsi: target: tcmu: add read length support
This commit is contained in:
Linus Torvalds 2018-06-27 09:42:16 -07:00
commit debd52a050
5 changed files with 43 additions and 16 deletions
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4
include/uapi/linux/target_core_user.h
View file

@ -44,6 +44,7 @@
#define TCMU_MAILBOX_VERSION 2
#define ALIGN_SIZE 64 /* Should be enough for most CPUs */
#define TCMU_MAILBOX_FLAG_CAP_OOOC (1 << 0) /* Out-of-order completions */
#define TCMU_MAILBOX_FLAG_CAP_READ_LEN (1 << 1) /* Read data length */
struct tcmu_mailbox {
__u16 version;
@ -71,6 +72,7 @@ struct tcmu_cmd_entry_hdr {
__u16 cmd_id;
__u8 kflags;
#define TCMU_UFLAG_UNKNOWN_OP 0x1
#define TCMU_UFLAG_READ_LEN 0x2
__u8 uflags;
} __packed;
@ -119,7 +121,7 @@ struct tcmu_cmd_entry {
__u8 scsi_status;
__u8 __pad1;
__u16 __pad2;
__u32 __pad3;
__u32 read_len;
char sense_buffer[TCMU_SENSE_BUFFERSIZE];
} rsp;
};