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Brian Behlendorf
dc1b30224f
If we are reaping from the cache and a concurrent allocation occurs then the caller must block until the reaping is complete. This is signaled by the clearing of the KMC_BIT_REAPING bit. Otherwise the caller will be in a tight loop which takes and releases the skc->skc_cache lock. When there are multiple concurrent callers the system will thrash on the lock and appear to lock up. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
The Solaris Porting Layer (SPL) is a Linux kernel module which provides many of the Solaris kernel APIs. This shim layer makes it possible to run Solaris kernel code in the Linux kernel with relatively minimal modification. This can be particularly useful when you want to track upstream Solaris development closely and don’t want the overhead of maintaining a large patch which converts Solaris primitives to Linux primitives.
To build packages for your distribution:
$ ./configure
$ make pkg
To copy the kernel code inside your kernel source tree for builtin compilation:
$ ./configure --enable-linux-builtin --with-linux=/usr/src/linux-...
$ ./copy-builtin /usr/src/linux-...
Full documentation for building, configuring, and using the SPL can be found at: http://zfsonlinux.org