NTFS: - Add disable_sparse mount option together with a per volume sparse

	enable bit which is set appropriately and a per inode sparse disable
	bit which is preset on some system file inodes as appropriate.
      - Enforce that sparse support is disabled on NTFS volumes pre 3.0.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

1 files changed, 9 insertions, 2 deletions

diff --git a/Documentation/filesystems/ntfs.txt b/Documentation/filesystems/ntfs.txt
index f89b440fad1d..cb3cb8c06e9d 100644
--- a/Documentation/filesystems/ntfs.txt
+++ b/Documentation/filesystems/ntfs.txt
@@ -21,7 +21,7 @@ Overview
 ========
 
 Linux-NTFS comes with a number of user-space programs known as ntfsprogs.
-These include mkntfs, a full-featured ntfs file system format utility,
+These include mkntfs, a full-featured ntfs filesystem format utility,
 ntfsundelete used for recovering files that were unintentionally deleted
 from an NTFS volume and ntfsresize which is used to resize an NTFS partition.
 See the web site for more information.
@@ -149,7 +149,14 @@ case_sensitive=<BOOL>	If case_sensitive is specified, treat all file names as
                         name, if it exists.  If case_sensitive, you will need
                         to provide the correct case of the short file name.
 
-errors=opt              What to do when critical file system errors are found.
+disable_sparse=<BOOL>   If disable_sparse is specified, creation of sparse
+                        regions, i.e. holes, inside files is disabled for the
+                        volume (for the duration of this mount only).  By
+                        default, creation of sparse regions is enabled, which
+                        is consistent with the behaviour of traditional Unix
+                        filesystems.
+
+errors=opt              What to do when critical filesystem errors are found.
                         Following values can be used for "opt":
                           continue: DEFAULT, try to clean-up as much as
                                     possible, e.g. marking a corrupt inode as