Merge tag 'libnvdimm-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm...

[linux-2.6-block.git] / include / uapi / linux / fs.h

diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 401c409e923983ca255500a34b6c0b7bdd013478..b8a5b3b86ad63ef0825e9a9aea1784bcc68fe425 100644 (file)
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -39,12 +39,48 @@
 #define RENAME_EXCHANGE                (1 << 1)        /* Exchange source and dest */
 #define RENAME_WHITEOUT                (1 << 2)        /* Whiteout source */
 
+struct file_clone_range {
+       __s64 src_fd;
+       __u64 src_offset;
+       __u64 src_length;
+       __u64 dest_offset;
+};
+
 struct fstrim_range {
        __u64 start;
        __u64 len;
        __u64 minlen;
 };
 
+/* extent-same (dedupe) ioctls; these MUST match the btrfs ioctl definitions */
+#define FILE_DEDUPE_RANGE_SAME         0
+#define FILE_DEDUPE_RANGE_DIFFERS      1
+
+/* from struct btrfs_ioctl_file_extent_same_info */
+struct file_dedupe_range_info {
+       __s64 dest_fd;          /* in - destination file */
+       __u64 dest_offset;      /* in - start of extent in destination */
+       __u64 bytes_deduped;    /* out - total # of bytes we were able
+                                * to dedupe from this file. */
+       /* status of this dedupe operation:
+        * < 0 for error
+        * == FILE_DEDUPE_RANGE_SAME if dedupe succeeds
+        * == FILE_DEDUPE_RANGE_DIFFERS if data differs
+        */
+       __s32 status;           /* out - see above description */
+       __u32 reserved;         /* must be zero */
+};
+
+/* from struct btrfs_ioctl_file_extent_same_args */
+struct file_dedupe_range {
+       __u64 src_offset;       /* in - start of extent in source */
+       __u64 src_length;       /* in - length of extent */
+       __u16 dest_count;       /* in - total elements in info array */
+       __u16 reserved1;        /* must be zero */
+       __u32 reserved2;        /* must be zero */
+       struct file_dedupe_range_info info[0];
+};
+
 /* And dynamically-tunable limits and defaults: */
 struct files_stat_struct {
        unsigned long nr_files;         /* read only */
@@ -161,6 +197,9 @@ struct inodes_stat_t {
 #define FIFREEZE       _IOWR('X', 119, int)    /* Freeze */
 #define FITHAW         _IOWR('X', 120, int)    /* Thaw */
 #define FITRIM         _IOWR('X', 121, struct fstrim_range)    /* Trim */
+#define FICLONE                _IOW(0x94, 9, int)
+#define FICLONERANGE   _IOW(0x94, 13, struct file_clone_range)
+#define FIDEDUPERANGE  _IOWR(0x94, 54, struct file_dedupe_range)
 
 #define        FS_IOC_GETFLAGS                 _IOR('f', 1, long)
 #define        FS_IOC_SETFLAGS                 _IOW('f', 2, long)