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Rohan Puri
fd7265c646
zfs umount -> zfsctl_destroy() takes the zfs_snapshot_lock as a writer and calls zfsctl_snapshot_unmount_cancel(), which waits for snapentry_expire() if present (when snap is automounted). This snapentry_expire() itself then waits for zfs_snapshot_lock as a reader, resulting in a deadlock. The fix is to only hold the zfs_snapshot_lock over the tree lookup and removal. After a successful lookup the lock can be dropped and zfs_snapentry_t will remain valid until the reference taken by the lookup is released. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rohan Puri <rohan.puri15@gmail.com> Closes #7751 Closes #7752
ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.
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.
Release
ZFS on Linux is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197
Supported Kernels
- The
METAfile contains the officially recognized supported kernel versions.