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Chunwei Chen 7dc71949f2 Fix z_sync_cnt decrement in zfs_close 
The comment in zfs_close states that "Under Linux the zfs_close() hook
is not symmetric with zfs_open()". This is not true. zfs_open/zfs_close
is associated with every successful struct file creation/deletion, which
should always be balanced.

Here is an example of what's wrong:

Process A		B
	open(O_SYNC)
	z_sync_cnt = 1
			open(O_SYNC)
			z_sync_cnt = 2
	close()
	z_sync_cnt = 0

So z_sync_cnt is 0 even if B still has the file with O_SYNC.

Also moves the generic_file_open call before zfs_open to ensure that in
the case generic_file_open fails z_sync_cnt is not incremented.  This
is safe because generic_file_open has no side effects.

Signed-off-by: Chunwei Chen <tuxoko@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #1962
2013-12-17 10:28:27 -08:00
cmd Fix multipath bug in vdev_id caused by inconsistent field numbering 2013-12-10 09:58:35 -08:00
config Properly ignore bdi_setup_and_register return value 2013-12-04 14:53:45 -08:00
dracut Refresh dracut module setup 2013-03-21 12:51:06 -07:00
etc Update init script to allow verbose mounts 2013-12-06 10:59:35 -08:00
include Sync /dev/zfs ioctl ordering 2013-12-16 09:41:39 -08:00
lib Remove ZFC_IOC_*_MINOR ioctl()s 2013-12-16 09:15:57 -08:00
man Update zfs(8) Snapshots section 2013-12-16 09:41:45 -08:00
module Fix z_sync_cnt decrement in zfs_close 2013-12-17 10:28:27 -08:00
patches Adding grub2 mkconfig support patch 2012-07-30 16:17:23 -07:00
rpm Change zfs-dkms requirement 2013-11-21 11:13:58 -08:00
scripts Silence e2fsck warning in zconfig.sh 2013-12-16 09:46:10 -08:00
udev Open pools asynchronously after module load 2013-07-03 09:24:38 -07:00
.gitignore Ignore *.{deb,rpm,tar.gz} files in the top directory. 2013-04-24 16:18:59 -07:00
AUTHORS Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Add dbufstat.py command 2013-10-25 14:52:45 -07:00
copy-builtin Consistent menuconfig name 2012-08-26 13:49:37 -07:00
COPYRIGHT Refresh links to web site 2013-03-06 15:46:41 -08:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am Add cstyle.pl utility and cstyle.1 man page 2013-10-30 11:36:30 -07:00
META Tag zfs-0.6.2 2013-08-22 13:33:26 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
zfs-script-config.sh.in Retire zpool_id infrastructure 2013-01-29 12:23:17 -08:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.markdown

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