[SCSI] mpt2sas: Removed redundant global mutex for IOCTLs

Browse source

When the lock_kernel and unlock_kernel routines were removed in the
2.6.39 kernel, a global mutex was added on top of the existing mutex
which already existed. With this implementation, only one IOCTL
will be active at any time no matter how many ever controllers
are present. This causes poor performance.

Removed the global mutex so that the driver can work with the existing
semaphore that was already part of the existing code.

Signed-off-by: Nagalakshmi Nandigama <nagalakshmi.nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

...

This commit is contained in:

nagalakshmi.nandigama@lsi.com 2012-03-20 12:04:11 +05:30 • committed by James Bottomley

parent 609dc44b9a

commit 913809f6e7

1 changed files with 122 additions and 175 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

373

drivers/scsi/mpt2sas/mpt2sas_ctl.c

View file