Yan, Zheng 4df27c4d5c Btrfs: change how subvolumes are organized ... btrfs allows subvolumes and snapshots anywhere in the directory tree. If we snapshot a subvolume that contains a link to other subvolume called subvolA, subvolA can be accessed through both the original subvolume and the snapshot. This is similar to creating hard link to directory, and has the very similar problems. The aim of this patch is enforcing there is only one access point to each subvolume. Only the first directory entry (the one added when the subvolume/snapshot was created) is treated as valid access point. The first directory entry is distinguished by checking root forward reference. If the corresponding root forward reference is missing, we know the entry is not the first one. This patch also adds snapshot/subvolume rename support, the code allows rename subvolume link across subvolumes. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>		2009-09-21 15:56:00 -04:00
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acl.c	helpers for acl caching + switch to those	2009-06-24 08:17:07 -04:00
async-thread.c	Btrfs: Fix async thread shutdown race	2009-09-15 20:20:17 -04:00
async-thread.h	Btrfs: keep irqs on more often in the worker threads	2009-09-11 13:31:04 -04:00
btrfs_inode.h	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
compat.h	Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code	2009-01-06 09:38:55 -05:00
compression.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable	2009-09-11 19:07:25 -04:00
compression.h	Btrfs: Add zlib compression support	2008-10-29 14:49:59 -04:00
ctree.c	Btrfs: Avoid delayed reference update looping	2009-07-24 12:42:46 -04:00
ctree.h	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
delayed-ref.c	Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)	2009-06-10 11:29:46 -04:00
delayed-ref.h	Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)	2009-06-10 11:29:46 -04:00
dir-item.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
disk-io.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
disk-io.h	Btrfs: leave btree locks spinning more often	2009-03-24 16:14:28 -04:00
export.c	Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)	2009-06-10 11:29:46 -04:00
export.h	NFS support for btrfs - v3	2008-09-25 11:04:06 -04:00
extent-tree.c	Btrfs: speed up snapshot dropping	2009-09-21 15:55:59 -04:00
extent_io.c	Btrfs: properly honor wbc->nr_to_write changes	2009-09-18 16:08:46 -04:00
extent_io.h	Btrfs: Use PagePrivate2 to track pages in the data=ordered code.	2009-09-11 13:31:07 -04:00
extent_map.c	Btrfs: search for an allocation hint while filling file COW	2009-09-18 16:08:52 -04:00
extent_map.h	Btrfs: search for an allocation hint while filling file COW	2009-09-18 16:08:52 -04:00
file-item.c	Btrfs: leave btree locks spinning more often	2009-03-24 16:14:28 -04:00
file.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable	2009-09-11 19:07:25 -04:00
free-space-cache.c	Btrfs: fix btrfs_remove_from_free_space corner case	2009-07-31 11:03:58 -04:00
free-space-cache.h	Btrfs: use hybrid extents+bitmap rb tree for free space	2009-07-24 09:23:30 -04:00
hash.h	Btrfs: remove crc32c.h and use libcrc32c directly.	2009-06-10 11:29:53 -04:00
inode-item.c	Btrfs: do not reuse objectid of deleted snapshot/subvol	2009-09-21 15:56:00 -04:00
inode-map.c	Btrfs: do not reuse objectid of deleted snapshot/subvol	2009-09-21 15:56:00 -04:00
inode.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
ioctl.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
ioctl.h	Btrfs: fix ioctl arg size (userland incompatible change!)	2009-01-16 11:59:08 -05:00
Kconfig	Btrfs: make btrfs acls selectable	2009-02-04 09:28:28 -05:00
locking.c	Btrfs: fix typos in comments	2009-04-02 16:46:06 -04:00
locking.h	Btrfs: fix spinlock assertions on UP systems	2009-03-09 11:45:38 -04:00
Makefile	Btrfs: Mixed back reference (FORWARD ROLLING FORMAT CHANGE)	2009-06-10 11:29:46 -04:00
ordered-data.c	Btrfs: Use PagePrivate2 to track pages in the data=ordered code.	2009-09-11 13:31:07 -04:00
ordered-data.h	Btrfs: Use PagePrivate2 to track pages in the data=ordered code.	2009-09-11 13:31:07 -04:00
orphan.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
print-tree.c	Btrfs: remove of redundant btrfs_header_level	2009-07-22 16:52:13 -04:00
print-tree.h	Btrfs: Create extent_buffer interface for large blocksizes	2008-09-25 11:03:56 -04:00
ref-cache.c	Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks	2009-02-04 09:27:02 -05:00
ref-cache.h	Btrfs: Make btrfs_drop_snapshot work in larger and more efficient chunks	2009-02-04 09:27:02 -05:00
relocation.c	Btrfs: use a cached state for extent state operations during delalloc	2009-09-11 13:31:07 -04:00
root-tree.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
struct-funcs.c	Btrfs: Fix checkpatch.pl warnings	2009-01-05 21:25:51 -05:00
super.c	headers: smp_lock.h redux	2009-07-12 12:22:34 -07:00
sysfs.c	Btrfs: Fix checkpatch.pl warnings	2009-01-05 21:25:51 -05:00
transaction.c	Btrfs: change how subvolumes are organized	2009-09-21 15:56:00 -04:00
transaction.h	Btrfs: be more polite in the async caching threads	2009-07-30 10:14:46 -04:00
tree-defrag.c	Btrfs: do extent allocation and reference count updates in the background	2009-03-24 16:14:25 -04:00
tree-log.c	Btrfs: do not reuse objectid of deleted snapshot/subvol	2009-09-21 15:56:00 -04:00
tree-log.h	Btrfs: tree logging unlink/rename fixes	2009-03-24 16:14:52 -04:00
version.h	Update Btrfs files for in-kernel usage	2008-09-25 15:41:59 -04:00
version.sh	Btrfs: Fixes for 2.6.28-rc API changes	2008-11-19 21:17:22 -05:00
volumes.c	Btrfs: switch extent_map to a rw lock	2009-09-11 13:31:05 -04:00
volumes.h	Btrfs: avoid races between super writeout and device list updates	2009-06-10 15:17:02 -04:00
xattr.c	Btrfs: selinux support	2009-02-04 09:29:13 -05:00
xattr.h	Btrfs: selinux support	2009-02-04 09:29:13 -05:00
zlib.c	Btrfs: correct error-handling zlib error handling	2009-08-07 13:51:33 -04:00