NTFS: Stamp the transaction log ($UsnJrnl), aka user space journal, if it

      is active on the volume and we are mounting read-write or remounting
      from read-only to read-write.

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

1 files changed, 7 insertions, 15 deletions

diff --git a/fs/ntfs/layout.h b/fs/ntfs/layout.h
index 458cb541d4dd..03c3e8612e7c 100644
--- a/fs/ntfs/layout.h
+++ b/fs/ntfs/layout.h
@@ -936,20 +936,12 @@ typedef struct {
                 /* 56*/ le64 quota_charged;     /* Byte size of the charge to
                                 the quota for all streams of the file. Note: Is
                                 zero if quotas are disabled. */
-                /* 64*/ le64 usn;               /* Last update sequence number
-                                of the file. This is a direct index into the
-                                change (aka usn) journal file. It is zero if
-                                the usn journal is disabled.
-                                NOTE: To disable the journal need to delete
-                                the journal file itself and to then walk the
-                                whole mft and set all Usn entries in all mft
-                                records to zero! (This can take a while!)
-                                The journal is FILE_Extend/$UsnJrnl. Win2k
-                                will recreate the journal and initiate
-                                logging if necessary when mounting the
-                                partition. This, in contrast to disabling the
-                                journal is a very fast process, so the user
-                                won't even notice it. */
+                /* 64*/ USN usn;                /* Last update sequence number
+                                of the file.  This is a direct index into the
+                                transaction log file ($UsnJrnl).  It is zero if
+                                the usn journal is disabled or this file has
+                                not been subject to logging yet.  See usnjrnl.h
+                                for details. */
                 } __attribute__ ((__packed__)) v3;
         /* sizeof() = 72 bytes (NTFS 3.x) */
         } __attribute__ ((__packed__)) ver;
@@ -1912,7 +1904,7 @@ enum {
         VOLUME_FLAGS_MASK               = const_cpu_to_le16(0x803f),
 
         /* To make our life easier when checking if we must mount read-only. */
-        VOLUME_MUST_MOUNT_RO_MASK       = const_cpu_to_le16(0x8037),
+        VOLUME_MUST_MOUNT_RO_MASK       = const_cpu_to_le16(0x8027),
 } __attribute__ ((__packed__));
 
 typedef le16 VOLUME_FLAGS;