Update fiemap document to add FIEMAP_FLAG_COW support. Signed-off-by: Jie Liu <jeff.liu at oracle.com> Cc: Alexander Viro <viro at zeniv.linux.org.uk> Cc: Andreas Dilger <adilger at dilger.ca> Cc: Dave Chinner <david at fromorbit.com> Cc: Mark Fasheh <mfasheh at suse.com> Cc: Joel Becker <jlbec at evilplan.org> Cc: Jan Kara <jack at suse.de> Cc: Chris Mason <chris.mason at fusionio.com> Cc: Christoph Hellwig <hch at infradead.org> --- Documentation/filesystems/fiemap.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/filesystems/fiemap.txt b/Documentation/filesystems/fiemap.txt index 1b805a0..8942d3f 100644 --- a/Documentation/filesystems/fiemap.txt +++ b/Documentation/filesystems/fiemap.txt @@ -58,6 +58,9 @@ If this flag is set, the kernel will sync the file before mapping extents. If this flag is set, the extents returned will describe the inodes extended attribute lookup tree, instead of its data tree. +* FIEMAP_FLAG_COW +If this flag is set, the kernel will only return the extents which are in +copy-on-write state. Extent Mapping -------------- -- 1.7.9.5