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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/ordered-data.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/ordered-data.c')
-rw-r--r--fs/btrfs/ordered-data.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index e7317c8fda2..370bb428559 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -182,7 +182,7 @@ int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
entry->len = len;
entry->disk_len = disk_len;
entry->inode = inode;
- if (type == BTRFS_ORDERED_NOCOW || type == BTRFS_ORDERED_COMPRESSED)
+ if (type != BTRFS_ORDERED_IO_DONE && type != BTRFS_ORDERED_COMPLETE)
set_bit(type, &entry->flags);
/* one ref for the tree */
@@ -339,7 +339,8 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root, int nocow_only)
ordered = list_entry(cur, struct btrfs_ordered_extent,
root_extent_list);
if (nocow_only &&
- !test_bit(BTRFS_ORDERED_NOCOW, &ordered->flags)) {
+ !test_bit(BTRFS_ORDERED_NOCOW, &ordered->flags) &&
+ !test_bit(BTRFS_ORDERED_PREALLOC, &ordered->flags)) {
list_move(&ordered->root_extent_list,
&root->fs_info->ordered_extents);
cond_resched_lock(&root->fs_info->ordered_extent_lock);