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authorYan Zheng <zheng.yan@oracle.com>2008-10-30 14:25:28 -0400
committerChris Mason <chris.mason@oracle.com>2008-10-30 14:25:28 -0400
commitd899e05215178fed903ad0e7fc1cb4d8e0cc0a88 (patch)
tree2969e3558f5c50ec0f9ac4201099c0d5d1d6e2c2 /fs/btrfs/ioctl.c
parent80ff385665b7fca29fefe358a60ab0d09f9b8e87 (diff)
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 <zheng.yan@oracle.com>
Diffstat (limited to 'fs/btrfs/ioctl.c')
-rw-r--r--fs/btrfs/ioctl.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 7f915d478399..9ff2b4e0e922 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -724,7 +724,8 @@ long btrfs_ioctl_clone(struct file *file, unsigned long src_fd)
724 extent = btrfs_item_ptr(leaf, slot, 724 extent = btrfs_item_ptr(leaf, slot,
725 struct btrfs_file_extent_item); 725 struct btrfs_file_extent_item);
726 found_type = btrfs_file_extent_type(leaf, extent); 726 found_type = btrfs_file_extent_type(leaf, extent);
727 if (found_type == BTRFS_FILE_EXTENT_REG) { 727 if (found_type == BTRFS_FILE_EXTENT_REG ||
728 found_type == BTRFS_FILE_EXTENT_PREALLOC) {
728 u64 ds = btrfs_file_extent_disk_bytenr(leaf, 729 u64 ds = btrfs_file_extent_disk_bytenr(leaf,
729 extent); 730 extent);
730 u64 dl = btrfs_file_extent_disk_num_bytes(leaf, 731 u64 dl = btrfs_file_extent_disk_num_bytes(leaf,