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Sage Weil 6bdb72ded1 Btrfs: create snapshot references in same commit as snapshot 
This creates the reference to a new snapshot in the same commit as the
snapshot itself.  This avoids the need for a second commit in order for a
snapshot to be persistent, and also avoids the problem of "leaking" a
new snapshot tree root if the host crashes before the second commit takes
place.

It is not at all clear to me why it wasn't always done this way.  If there
is still a reason for the two-stage {create,finish}_pending_snapshots()
approach I'm missing something!  :)

I've been running this for a couple weeks under pretty heavy usage (a few
snapshots per minute) without obvious problems.

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
 		2010-04-05 14:42:01 -04:00
..
Kconfig
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Makefile
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acl.c Btrfs: fix a memory leak in btrfs_init_acl 2010-01-28 16:20:39 -05:00
async-thread.c Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
async-thread.h Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
btrfs_inode.h Btrfs: add new defrag-range ioctl. 2010-03-15 11:00:10 -04:00
compat.h
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compression.c Btrfs: use add_to_page_cache_lru, use __page_cache_alloc 2010-04-05 14:41:51 -04:00
compression.h
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ctree.c Btrfs: Fix per root used space accounting 2009-12-17 12:33:35 -05:00
ctree.h Btrfs: kill max_extent mount option 2010-03-30 21:19:09 -04:00
delayed-ref.c
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delayed-ref.h
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dir-item.c Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
disk-io.c Btrfs: kill max_extent mount option 2010-03-30 21:19:09 -04:00
disk-io.h
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export.c Btrfs: change how we mount subvolumes 2010-03-15 10:58:13 -04:00
export.h
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extent-tree.c Btrfs: fix small race with delalloc flushing waitqueue's 2010-04-05 14:42:00 -04:00
extent_io.c Btrfs: use add_to_page_cache_lru, use __page_cache_alloc 2010-04-05 14:41:51 -04:00
extent_io.h Btrfs: cache the extent state everywhere we possibly can V2 2010-03-15 11:00:13 -04:00
extent_map.c Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL 2010-03-08 16:26:50 -05:00
extent_map.h Btrfs: search for an allocation hint while filling file COW 2009-09-18 16:08:52 -04:00
file-item.c
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file.c Btrfs: cache the extent state everywhere we possibly can V2 2010-03-15 11:00:13 -04:00
free-space-cache.c Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL 2010-03-08 16:26:50 -05:00
free-space-cache.h
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hash.h
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inode-item.c Btrfs: check size of inode backref before adding hardlink 2009-09-24 09:17:31 -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: kill max_extent mount option 2010-03-30 21:19:09 -04:00
ioctl.c Btrfs: check btrfs_get_extent return for IS_ERR() 2010-03-30 21:19:09 -04:00
ioctl.h Btrfs: use __u64 types in ioctl.h 2010-03-16 14:24:27 -04:00
locking.c
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locking.h
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ordered-data.c Btrfs: kill max_extent mount option 2010-03-30 21:19:09 -04:00
ordered-data.h Btrfs: cache ordered extent when completing io 2010-03-15 11:00:13 -04:00
orphan.c Btrfs: change how subvolumes are organized 2009-09-21 15:56:00 -04:00
print-tree.c
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print-tree.h
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ref-cache.c
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ref-cache.h Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL 2010-03-08 16:26:50 -05:00
relocation.c Btrfs: cache the extent state everywhere we possibly can V2 2010-03-15 11:00:13 -04:00
root-tree.c Btrfs: skip btrfs_release_path in btrfs_update_root and btrfs_del_root 2009-11-11 14:20:18 -05:00
struct-funcs.c
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super.c Btrfs: kill max_extent mount option 2010-03-30 21:19:09 -04:00
sysfs.c
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transaction.c Btrfs: create snapshot references in same commit as snapshot 2010-04-05 14:42:01 -04:00
transaction.h Btrfs: Avoid superfluous tree-log writeout 2009-12-15 21:24:25 -05:00
tree-defrag.c
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tree-log.c Btrfs: change how we mount subvolumes 2010-03-15 10:58:13 -04:00
tree-log.h Btrfs: avoid tree log commit when there are no changes 2009-10-13 13:35:12 -04:00
version.h
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version.sh
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volumes.c Btrfs: fix chunk allocate size calculation 2010-03-30 21:19:09 -04:00
volumes.h Btrfs: make balance code choose more wisely when relocating 2009-09-21 19:23:48 -04:00
xattr.c Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
xattr.h Btrfs: Pass transaction handle to security and ACL initialization functions 2009-12-17 12:33:34 -05:00
zlib.c Btrfs: correct error-handling zlib error handling 2009-08-07 13:51:33 -04:00