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author | pjd <pjd@FreeBSD.org> | 2008-11-17 20:49:29 +0000 |
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committer | pjd <pjd@FreeBSD.org> | 2008-11-17 20:49:29 +0000 |
commit | bbe899b96e388a8b82439f81ed3707e0d9c6070d (patch) | |
tree | 81b89fa4ac6467771d5aa291a97f4665981a6108 /sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c | |
parent | d2f579595c362ce27b4d87e2c40e1c4e09b929e3 (diff) | |
download | FreeBSD-src-bbe899b96e388a8b82439f81ed3707e0d9c6070d.zip FreeBSD-src-bbe899b96e388a8b82439f81ed3707e0d9c6070d.tar.gz |
Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes.
This bring huge amount of changes, I'll enumerate only user-visible changes:
- Delegated Administration
Allows regular users to perform ZFS operations, like file system
creation, snapshot creation, etc.
- L2ARC
Level 2 cache for ZFS - allows to use additional disks for cache.
Huge performance improvements mostly for random read of mostly
static content.
- slog
Allow to use additional disks for ZFS Intent Log to speed up
operations like fsync(2).
- vfs.zfs.super_owner
Allows regular users to perform privileged operations on files stored
on ZFS file systems owned by him. Very careful with this one.
- chflags(2)
Not all the flags are supported. This still needs work.
- ZFSBoot
Support to boot off of ZFS pool. Not finished, AFAIK.
Submitted by: dfr
- Snapshot properties
- New failure modes
Before if write requested failed, system paniced. Now one
can select from one of three failure modes:
- panic - panic on write error
- wait - wait for disk to reappear
- continue - serve read requests if possible, block write requests
- Refquota, refreservation properties
Just quota and reservation properties, but don't count space consumed
by children file systems, clones and snapshots.
- Sparse volumes
ZVOLs that don't reserve space in the pool.
- External attributes
Compatible with extattr(2).
- NFSv4-ACLs
Not sure about the status, might not be complete yet.
Submitted by: trasz
- Creation-time properties
- Regression tests for zpool(8) command.
Obtained from: OpenSolaris
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c index 07ec0f6..f0a75b5 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c @@ -472,10 +472,14 @@ zfs_range_unlock_reader(znode_t *zp, rl_t *remove) */ if (remove->r_cnt == 1) { avl_remove(tree, remove); - if (remove->r_write_wanted) + if (remove->r_write_wanted) { cv_broadcast(&remove->r_wr_cv); - if (remove->r_read_wanted) + cv_destroy(&remove->r_wr_cv); + } + if (remove->r_read_wanted) { cv_broadcast(&remove->r_rd_cv); + cv_destroy(&remove->r_rd_cv); + } } else { ASSERT3U(remove->r_cnt, ==, 0); ASSERT3U(remove->r_write_wanted, ==, 0); @@ -501,10 +505,14 @@ zfs_range_unlock_reader(znode_t *zp, rl_t *remove) rl->r_cnt--; if (rl->r_cnt == 0) { avl_remove(tree, rl); - if (rl->r_write_wanted) + if (rl->r_write_wanted) { cv_broadcast(&rl->r_wr_cv); - if (rl->r_read_wanted) + cv_destroy(&rl->r_wr_cv); + } + if (rl->r_read_wanted) { cv_broadcast(&rl->r_rd_cv); + cv_destroy(&rl->r_rd_cv); + } kmem_free(rl, sizeof (rl_t)); } } |