Files
mirror_zfs/module/zfs
Mark Johnston 6e00561712 Add a "try" operation for range locks
zfs_rangelock_tryenter() bails immediately instead of waiting for the
lock to become available.  This will be used to resolve a deadlock in
the FreeBSD page-in code.  No functional change intended.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Signed-off-by: Mark Johnston <markj@FreeBSD.org>
Closes #10519
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