07012da668
The following panic would occur under certain heavy load: [ 4692.202686] Kernel panic - not syncing: thread ffff8800c4f5dd60 terminating with rrw lock ffff8800da1b9c40 held [ 4692.228053] CPU: 1 PID: 6250 Comm: mmap_deadlock Tainted: P OE 3.18.10 #7 The culprit is that ZFS_EXIT(zsb) would call tsd_exit() every time, which would purge all tsd data for the thread. However, ZFS_ENTER is designed to be reentrant, so we cannot allow ZFS_EXIT to blindly purge tsd data. Instead, we rely on the new behavior of tsd_set. When NULL is passed as the new value to tsd_set, it will automatically remove the tsd entry specified the the key for the current thread. rrw_tsd_key and zfs_allow_log_key already calls tsd_set(key, NULL) when they're done. The zfs_fsyncer_key relied on ZFS_EXIT(zsb) to call tsd_exit() to do clean up. Now we explicitly call tsd_set(key, NULL) on them. Signed-off-by: Chunwei Chen <tuxoko@gmail.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #3247
Native ZFS for Linux!
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.
Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org