Brian Behlendorf 8d70398740 Retry zfs_znode_alloc() in zfs_mknode()
For historical reasons zfs_mknode() was written such that it could
never fail.  This poses a problem for Linux since zfs_znode_alloc()
could potentually failure due to low memory.  Handle this gracefully
by retrying zfs_znode_alloc() until it succeeds, direct reclaim
will eventually be able to allocate memory.

Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #5535 
Closes #5908
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ZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the Illumos community.

ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers. And it's native!

Official Resources

Installation

Full documentation for installing ZoL on your favorite Linux distribution can be found at our site.

Contribute & Develop

We have a separate document with contribution guidelines.

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