mirror_zfs/module/os/linux
Paul Dagnelie 43eaef6de8 Fix zrele race in zrele_async that can cause hang
There is a race condition in zfs_zrele_async when we are checking if 
we would be the one to evict an inode. This can lead to a txg sync 
deadlock.

Instead of calling into iput directly, we attempt to perform the atomic 
decrement ourselves, unless that would set the i_count value to zero. 
In that case, we dispatch a call to iput to run later, to prevent a 
deadlock from occurring.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #11527 
Closes #11530
2021-01-28 11:39:13 -08:00
..
spl Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
zfs Fix zrele race in zrele_async that can cause hang 2021-01-28 11:39:13 -08:00