Files
mirror_zfs/module/zfs
Brian Behlendorf beb9826902 Fix txg_sync_thread deadlock
Update two kmem_alloc()'s in dbuf_dirty() to use KM_PUSHPAGE.
Because these functions are called from txg_sync_thread we
must ensure they don't reenter the zfs filesystem code via
the .writepage callback.  This would result in a deadlock.

This deadlock is rare and has only been observed once under
an abusive mmap() write workload.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2011-07-22 15:24:57 -07:00
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