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| author | Yan Zheng <zheng.yan@oracle.com> | 2008-10-30 14:25:28 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-10-30 14:25:28 -0400 |
| commit | d899e05215178fed903ad0e7fc1cb4d8e0cc0a88 (patch) | |
| tree | 2969e3558f5c50ec0f9ac4201099c0d5d1d6e2c2 /fs/btrfs/ordered-data.c | |
| parent | 80ff385665b7fca29fefe358a60ab0d09f9b8e87 (diff) | |
| download | kernel_samsung_smdk4412-d899e05215178fed903ad0e7fc1cb4d8e0cc0a88.tar.gz kernel_samsung_smdk4412-d899e05215178fed903ad0e7fc1cb4d8e0cc0a88.tar.bz2 kernel_samsung_smdk4412-d899e05215178fed903ad0e7fc1cb4d8e0cc0a88.zip | |
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.c | 5 |
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); |