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authorJeff Mahoney <jeffm@suse.com>2016-04-01 23:14:28 +0300
committerDavid Sterba <dsterba@suse.com>2016-04-28 12:06:41 +0300
commit33ca913349962208e13e894ada99b9ae6e0080ee (patch)
tree67da8b2d4f15b8742f8df8a4baed01f6a86b8212 /include/uapi/linux/btrfs.h
parent04cd01dffbf9be14ccc51595280c8dc8c318a9c9 (diff)
downloadlinux-33ca913349962208e13e894ada99b9ae6e0080ee.tar.xz
btrfs: uapi/linux/btrfs.h migration, move struct btrfs_ioctl_defrag_range_args
struct btrfs_ioctl_defrag_range_args is used by the BTRFS_IOC_DEFRAG_RANGE ioctl. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include/uapi/linux/btrfs.h')
-rw-r--r--include/uapi/linux/btrfs.h38
1 files changed, 37 insertions, 1 deletions
diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h
index abae362d4ec7..98aff38a70d3 100644
--- a/include/uapi/linux/btrfs.h
+++ b/include/uapi/linux/btrfs.h
@@ -474,9 +474,45 @@ struct btrfs_ioctl_clone_range_args {
__u64 dest_offset;
};
-/* flags for the defrag range ioctl */
+/*
+ * flags definition for the defrag range ioctl
+ *
+ * Used by:
+ * struct btrfs_ioctl_defrag_range_args.flags
+ */
#define BTRFS_DEFRAG_RANGE_COMPRESS 1
#define BTRFS_DEFRAG_RANGE_START_IO 2
+struct btrfs_ioctl_defrag_range_args {
+ /* start of the defrag operation */
+ __u64 start;
+
+ /* number of bytes to defrag, use (u64)-1 to say all */
+ __u64 len;
+
+ /*
+ * flags for the operation, which can include turning
+ * on compression for this one defrag
+ */
+ __u64 flags;
+
+ /*
+ * any extent bigger than this will be considered
+ * already defragged. Use 0 to take the kernel default
+ * Use 1 to say every single extent must be rewritten
+ */
+ __u32 extent_thresh;
+
+ /*
+ * which compression method to use if turning on compression
+ * for this defrag operation. If unspecified, zlib will
+ * be used
+ */
+ __u32 compress_type;
+
+ /* spare for later */
+ __u32 unused[4];
+};
+
#define BTRFS_SAME_DATA_DIFFERS 1
/* For extent-same ioctl */