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Brian Behlendorf
95331f4437
The workspace required by zlib to perform compression is roughly 512MB (order-7). These allocations are so large that we should never attempt to directly kmalloc an emergency object for them. It is far preferable to asynchronously vmalloc an additional slab in case it's needed. Then simply block waiting for an existing object to be released or for the new slab to be allocated. This can be accomplished by disabling emergency slab objects by passing the KMC_NOEMERGENCY flag at slab creation time. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> zfsonlinux/zfs#917
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