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Prakash Surya
2c02b71b14
To lay the ground work for introducing the taskq_dispatch_prealloc() interface, the tq_work_list and tq_threads fields had to be replaced with new alternatives in the taskq_t structure. The tq_threads field was replaced with tq_thread_list. Rather than storing the pointers to the taskq's kernel threads in an array, they are now stored as a list. In addition to laying the ground work for the taskq_dispatch_prealloc() interface, this change could also enable taskq threads to be dynamically created and destroyed as threads can now be added and removed to this list relatively easily. The tq_work_list field was replaced with tq_active_list. Instead of keeping a list of taskq_ent_t's which are currently being serviced, a list of taskq_threads currently servicing a taskq_ent_t is kept. This frees up the taskq_ent_t's tqent_list field when it is being serviced (i.e. now when a taskq_ent_t is being serviced, it's tqent_list field will be empty). Signed-off-by: Prakash Surya <surya1@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #65
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
Full documentation for building, configuring, and using the SPL can be found at: http://zfsonlinux.org