zfs/module/spl
Brian Behlendorf 11d0525cbb
Add rwsem_tryupgrade for 4.9.20-rt16 kernel
The RT rwsem implementation was changed to allow multiple readers
as of the 4.9.20-rt16 patch set.  This results in a build failure
because the existing implementation was forced to directly access
the rwsem structure which has changed.

While this could be accommodated by adding additional compatibility
code.  This patch resolves the build issue by simply assuming the
rwsem can never be upgraded.  This functionality is a performance
optimization and all callers must already handle this case.

Converting the last remaining use of __SPIN_LOCK_UNLOCKED to
spin_lock_init() was additionally required to get a clean build.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7589
2018-07-30 09:22:30 -07:00
..
Makefile.in Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md Update build system and packaging 2018-05-29 16:00:33 -07:00
THIRDPARTYLICENSE.gplv2 Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
THIRDPARTYLICENSE.gplv2.descrip Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
spl-atomic.c Fix cstyle warnings 2018-02-07 11:49:38 -08:00
spl-condvar.c Update build system and packaging 2018-05-29 16:00:33 -07:00
spl-cred.c Fix cstyle warnings 2018-02-07 11:49:38 -08:00
spl-err.c Update build system and packaging 2018-05-29 16:00:33 -07:00
spl-generic.c Update build system and packaging 2018-05-29 16:00:33 -07:00
spl-kmem-cache.c Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
spl-kmem.c Update build system and packaging 2018-05-29 16:00:33 -07:00
spl-kobj.c Fix cstyle warnings 2018-02-07 11:49:38 -08:00
spl-kstat.c Add pool state /proc entry, "SUSPENDED" pools 2018-06-06 09:33:54 -07:00
spl-mutex.c Fix cstyle warnings 2018-02-07 11:49:38 -08:00
spl-proc.c Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
spl-rwlock.c Add rwsem_tryupgrade for 4.9.20-rt16 kernel 2018-07-30 09:22:30 -07:00
spl-taskq.c Update build system and packaging 2018-05-29 16:00:33 -07:00
spl-thread.c Fix more cstyle warnings 2018-02-24 10:05:37 -08:00
spl-tsd.c Remove all spin_is_locked calls 2017-10-30 11:16:56 -07:00
spl-vmem.c Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00
spl-vnode.c Add rwsem_tryupgrade for 4.9.20-rt16 kernel 2018-07-30 09:22:30 -07:00
spl-xdr.c Update build system and packaging 2018-05-29 16:00:33 -07:00
spl-zlib.c Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00

README.md

The Solaris Porting Layer, SPL, is a Linux kernel module which provides a compatibility layer used by the ZFS on Linux project.

Installation

The latest version of the SPL is maintained as part of this repository. Only when building ZFS version 0.7.x or earlier must an external SPL release be used. These releases can be found at:

Release

The SPL is released under a GPLv2 license.
For more details see the NOTICE and THIRDPARTYLICENSE files; UCRL-CODE-235197