Add an ioctl to set 'nodatasum' flag on per file basis.

Signed-off-by: Amit Gud <g...@ksu.edu>


Index: newformat2/fs/btrfs/ioctl.c
===================================================================
--- newformat2.orig/fs/btrfs/ioctl.c
+++ newformat2/fs/btrfs/ioctl.c
@@ -1330,6 +1330,8 @@ long btrfs_ioctl(struct file *file, unsi
                return btrfs_ioctl_inode_flag(file, BTRFS_INODE_NOCOMPRESS, 0);
        case BTRFS_IOC_NODATACOW:
                return btrfs_ioctl_inode_flag(file, BTRFS_INODE_NODATACOW, 1);
+       case BTRFS_IOC_NODATASUM:
+               return btrfs_ioctl_inode_flag(file, BTRFS_INODE_NODATASUM, 1);
        }

        return -ENOTTY;
Index: newformat2/fs/btrfs/ioctl.h
===================================================================
--- newformat2.orig/fs/btrfs/ioctl.h
+++ newformat2/fs/btrfs/ioctl.h
@@ -69,5 +69,6 @@ struct btrfs_ioctl_clone_range_args {
                           struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_NODATACOW _IOW(BTRFS_IOCTL_MAGIC, 16, \
                           struct btrfs_ioctl_vol_args)
-
+#define BTRFS_IOC_NODATASUM _IOW(BTRFS_IOCTL_MAGIC, 17, \
+                          struct btrfs_ioctl_vol_args)
 #endif


-- 
May the source be with you.
http://www.cis.ksu.edu/~gud
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