diff options
| author |   Zach Brown <zab@redhat.com> | 2015-11-10 16:53:32 -0500 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2015-12-01 14:00:54 -0500 |
| commit | 3db11b2eecc02dc0eee943e71822c6d929281aa7 (patch) | |
| tree | 4c3e92e765c730a4b6a4acc4c444e043fd66c573 /fs/btrfs/ctree.h | |
| parent | x86: add sys_copy_file_range to syscall tables (diff) | |
| download | linux-dev-3db11b2eecc02dc0eee943e71822c6d929281aa7.tar.xz linux-dev-3db11b2eecc02dc0eee943e71822c6d929281aa7.zip | |
btrfs: add .copy_file_range file operation
This rearranges the existing COPY_RANGE ioctl implementation so that the
.copy_file_range file operation can call the core loop that copies file
data extent items.
The extent copying loop is lifted up into its own function. It retains
the core btrfs error checks that should be shared.
Signed-off-by: Zach Brown <zab@redhat.com>
[Anna Schumaker: Make flags an unsigned int,
Check for COPY_FR_REFLINK]
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 35489e7129a7..ede7277c167f 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -4055,6 +4055,9 @@ int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, loff_t pos, size_t write_bytes, struct extent_state **cached); int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end); +ssize_t btrfs_copy_file_range(struct file *file_in, loff_t pos_in, + struct file *file_out, loff_t pos_out, + size_t len, unsigned int flags); /* tree-defrag.c */ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, |