speed up snapshot dropping

Yan, Zheng linux-btrfs 1 version Aug 25, 2009 New

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#	Subject and files	Size	Replies
1/4	speed up snapshot dropping`fs/btrfs/extent-tree.c` `fs/btrfs/transaction.c`	+207 ~~-49~~	0 replies
2/4	add snapshot/subvol support for rename and rmdir`fs/btrfs/ctree.h` `fs/btrfs/dir-item.c` `fs/btrfs/inode.c` +4 more	+255 ~~-82~~	0 replies
3/4	do not reuse objectid of deleted snapshot/subvol`fs/btrfs/ctree.h` `fs/btrfs/disk-io.c` `fs/btrfs/inode-item.c` +3 more	+32 ~~-116~~	0 replies
4/4	add drop snapshot/subvol ioctl`fs/btrfs/ctree.h` `fs/btrfs/disk-io.c` `fs/btrfs/extent-tree.c` +5 more	+198 ~~-24~~	0 replies

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