From d899e05215178fed903ad0e7fc1cb4d8e0cc0a88 Mon Sep 17 00:00:00 2001 From: Yan Zheng Date: Thu, 30 Oct 2008 14:25:28 -0400 Subject: Btrfs: Add fallocate support v2 This patch updates btrfs-progs for fallocate support. fallocate is a little different in Btrfs because we need to tell the COW system that a given preallocated extent doesn't need to be cow'd as long as there are no snapshots of it. This leverages the -o nodatacow checks. Signed-off-by: Yan Zheng --- fs/btrfs/ordered-data.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'fs/btrfs/ordered-data.h') diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index e6d9bc54c2b1..260bf95dfe0c 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -68,6 +68,8 @@ struct btrfs_ordered_sum { #define BTRFS_ORDERED_COMPRESSED 3 /* writing a compressed extent */ +#define BTRFS_ORDERED_PREALLOC 4 /* set when writing to prealloced extent */ + struct btrfs_ordered_extent { /* logical offset in the file */ u64 file_offset; @@ -132,7 +134,7 @@ int btrfs_remove_ordered_extent(struct inode *inode, int btrfs_dec_test_ordered_pending(struct inode *inode, u64 file_offset, u64 io_size); int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset, - u64 start, u64 len, u64 disk_len, int type); + u64 start, u64 len, u64 disk_len, int tyep); int btrfs_add_ordered_sum(struct inode *inode, struct btrfs_ordered_extent *entry, struct btrfs_ordered_sum *sum); -- cgit v1.2.3