Brian Behlendorf e89260a1c8 Directory xattr znodes hold a reference on their parent ... Unlike normal file or directory znodes, an xattr znode is guaranteed to only have a single parent. Therefore, we can take a refernce on that parent if it is provided at create time and cache it. Additionally, we take care to cache it on any subsequent zfs_zaccess() where the parent is provided as an optimization. This allows us to avoid needing to do a zfs_zget() when setting up the SELinux security xattr in the create path. This is critical because a hash lookup on the directory will deadlock since it is locked. The zpl_xattr_security_init() call has also been moved up to the zpl layer to ensure TXs to create the required xattrs are performed after the create TX. Otherwise we run the risk of deadlocking on the open create TX. Ideally the security xattr should be fully constructed before the new inode is unlocked. However, doing so would require far more extensive changes to ZFS. This change may also have the benefitial side effect of ensuring xattr directory znodes are evicted from the cache before normal file or directory znodes due to the extra reference. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #671		2012-12-03 12:10:46 -08:00
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fm	Illumos #2671: zpool import should not fail if vdev ashift has increased	2012-11-15 11:05:59 -08:00
fs	Illumos #2703: add mechanism to report ZFS send progress	2012-09-19 13:39:06 -07:00
arc.h	Fix zfs_write_limit_max integer size mismatch on 32-bit systems	2012-10-11 11:09:25 -07:00
avl_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
avl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
bplist.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
bpobj.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dbuf.h	Switch KM_SLEEP to KM_PUSHPAGE	2012-08-27 12:01:37 -07:00
ddt.h	Add ddt_object_count() error handling	2012-10-29 08:57:45 -07:00
dmu_impl.h	Illumos #2703: add mechanism to report ZFS send progress	2012-09-19 13:39:06 -07:00
dmu_objset.h	Illumos #3100: zvol rename fails with EBUSY when dirty.	2012-10-03 13:59:02 -07:00
dmu_traverse.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dmu_tx.h	Add --enable-debug-dmu-tx configure option	2012-03-23 12:25:17 -07:00
dmu_zfetch.h	Add missing ZFS tunables	2011-05-04 10:02:37 -07:00
dmu.h	Illumos #2703: add mechanism to report ZFS send progress	2012-09-19 13:39:06 -07:00
dnode.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_dataset.h	Illumos #3100: zvol rename fails with EBUSY when dirty.	2012-10-03 13:59:02 -07:00
dsl_deadlist.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_deleg.h	Illumos #1644, #1645, #1646, #1647, #1708	2012-07-31 09:25:30 -07:00
dsl_dir.h	Switch KM_SLEEP to KM_PUSHPAGE	2012-08-27 12:01:37 -07:00
dsl_pool.h	Add txgs-<pool> kstat file	2012-11-02 15:45:56 -07:00
dsl_prop.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_scan.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
dsl_synctask.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
efi_partition.h	Move partition scanning from userspace to module.	2012-07-17 09:17:31 -07:00
Makefile.am	Add .zfs control directory	2012-03-22 13:03:47 -07:00
metaslab_impl.h	Add FASTWRITE algorithm for synchronous writes.	2012-10-17 08:56:41 -07:00
metaslab.h	Add FASTWRITE algorithm for synchronous writes.	2012-10-17 08:56:41 -07:00
nvpair_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
nvpair.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
refcount.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
rrwlock.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
sa_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
sa.h	Add sa_spill_rele() interface	2012-03-07 16:28:00 -08:00
spa_boot.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
spa_impl.h	Illumos #1693: persistent 'comment' field for a zpool	2012-08-08 11:49:37 -07:00
spa.h	Switch KM_SLEEP to KM_PUSHPAGE	2012-08-27 12:01:37 -07:00
space_map.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
txg_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
txg.h	Fix zfs_txg_timeout module parameter	2012-10-11 15:07:09 -07:00
u8_textprep_data.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
u8_textprep.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uberblock_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uberblock.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uio_impl.h	Add basic uio support	2011-02-10 09:21:43 -08:00
unique.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
uuid.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
vdev_disk.h	Linux 2.6.x compat, blkdev_compat.h	2011-02-23 12:29:38 -08:00
vdev_file.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
vdev_impl.h	Add FASTWRITE algorithm for synchronous writes.	2012-10-17 08:56:41 -07:00
vdev.h	Illumos #1949, #1953	2012-07-11 13:33:31 -07:00
xvattr.h	Add xvattr support	2011-03-02 11:43:50 -08:00
zap_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zap_leaf.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zap.h	Export symbols for the full ZAP API	2011-09-27 16:12:36 -07:00
zfs_acl.h	Fix build failures on PaX/GRSecurity patched kernels	2012-07-17 09:22:43 -07:00
zfs_context.h	Fix VOP_CLOSE() in userspace.	2012-10-03 13:32:48 -07:00
zfs_ctldir.h	Use ULL suffix in constants	2012-07-10 11:31:55 -07:00
zfs_debug.h	Cleanly support debug packages	2012-02-27 14:08:17 -08:00
zfs_dir.h	Prototype/structure update for Linux	2011-02-10 09:27:21 -08:00
zfs_fuid.h	Prototype/structure update for Linux	2011-02-10 09:27:21 -08:00
zfs_ioctl.h	Speed up 'zfs list -t snapshot -o name -s name'	2012-06-14 09:49:04 -07:00
zfs_onexit.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zfs_rlock.h	Range lock performance improvements	2011-03-08 12:44:06 -08:00
zfs_sa.h	Implement SA based xattrs	2011-11-28 15:45:51 -08:00
zfs_stat.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zfs_vfsops.h	Increase ZFS_OBJ_MTX_SZ to 256	2012-11-27 13:46:32 -08:00
zfs_vnops.h	Cleanup mmap(2) writes	2011-08-02 10:34:55 -07:00
zfs_znode.h	Directory xattr znodes hold a reference on their parent	2012-12-03 12:10:46 -08:00
zil_impl.h	Add FASTWRITE algorithm for synchronous writes.	2012-10-17 08:56:41 -07:00
zil.h	Add ZIL statistics.	2012-06-29 09:56:51 -07:00
zio_checksum.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zio_compress.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zio_impl.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zio.h	Add FASTWRITE algorithm for synchronous writes.	2012-10-17 08:56:41 -07:00
zpl.h	Linux 3.3 compat, iops->create()/mkdir()/mknod()	2012-04-30 12:52:38 -07:00
zrlock.h	Support custom build directories and move includes	2010-09-08 12:38:56 -07:00
zvol.h	Linux 2.6.x compat, blkdev_compat.h	2011-02-23 12:29:38 -08:00