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Diffstat (limited to 'fs/xfs/xfs_file.c')
-rw-r--r--fs/xfs/xfs_file.c82
1 files changed, 60 insertions, 22 deletions
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 61a5ad2600e8..53c9ab8fb777 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -919,28 +919,67 @@ out_unlock:
return error;
}
-STATIC int
-xfs_file_clone_range(
- struct file *file_in,
- loff_t pos_in,
- struct file *file_out,
- loff_t pos_out,
- u64 len)
-{
- return xfs_reflink_remap_range(file_in, pos_in, file_out, pos_out,
- len, false);
-}
-STATIC int
-xfs_file_dedupe_range(
- struct file *file_in,
- loff_t pos_in,
- struct file *file_out,
- loff_t pos_out,
- u64 len)
+loff_t
+xfs_file_remap_range(
+ struct file *file_in,
+ loff_t pos_in,
+ struct file *file_out,
+ loff_t pos_out,
+ loff_t len,
+ unsigned int remap_flags)
{
- return xfs_reflink_remap_range(file_in, pos_in, file_out, pos_out,
- len, true);
+ struct inode *inode_in = file_inode(file_in);
+ struct xfs_inode *src = XFS_I(inode_in);
+ struct inode *inode_out = file_inode(file_out);
+ struct xfs_inode *dest = XFS_I(inode_out);
+ struct xfs_mount *mp = src->i_mount;
+ loff_t remapped = 0;
+ xfs_extlen_t cowextsize;
+ int ret;
+
+ if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY))
+ return -EINVAL;
+
+ if (!xfs_sb_version_hasreflink(&mp->m_sb))
+ return -EOPNOTSUPP;
+
+ if (XFS_FORCED_SHUTDOWN(mp))
+ return -EIO;
+
+ /* Prepare and then clone file data. */
+ ret = xfs_reflink_remap_prep(file_in, pos_in, file_out, pos_out,
+ &len, remap_flags);
+ if (ret < 0 || len == 0)
+ return ret;
+
+ trace_xfs_reflink_remap_range(src, pos_in, len, dest, pos_out);
+
+ ret = xfs_reflink_remap_blocks(src, pos_in, dest, pos_out, len,
+ &remapped);
+ if (ret)
+ goto out_unlock;
+
+ /*
+ * Carry the cowextsize hint from src to dest if we're sharing the
+ * entire source file to the entire destination file, the source file
+ * has a cowextsize hint, and the destination file does not.
+ */
+ cowextsize = 0;
+ if (pos_in == 0 && len == i_size_read(inode_in) &&
+ (src->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE) &&
+ pos_out == 0 && len >= i_size_read(inode_out) &&
+ !(dest->i_d.di_flags2 & XFS_DIFLAG2_COWEXTSIZE))
+ cowextsize = src->i_d.di_cowextsize;
+
+ ret = xfs_reflink_update_dest(dest, pos_out + len, cowextsize,
+ remap_flags);
+
+out_unlock:
+ xfs_reflink_remap_unlock(file_in, file_out);
+ if (ret)
+ trace_xfs_reflink_remap_range_error(dest, ret, _RET_IP_);
+ return remapped > 0 ? remapped : ret;
}
STATIC int
@@ -1175,8 +1214,7 @@ const struct file_operations xfs_file_operations = {
.fsync = xfs_file_fsync,
.get_unmapped_area = thp_get_unmapped_area,
.fallocate = xfs_file_fallocate,
- .clone_file_range = xfs_file_clone_range,
- .dedupe_file_range = xfs_file_dedupe_range,
+ .remap_file_range = xfs_file_remap_range,
};
const struct file_operations xfs_dir_file_operations = {