@@ -1273,9 +1273,6 @@ if it is a directory itself.
.BR grpquota | noquota | quota | usrquota
These options are accepted but ignored.
-Do not attach buffer_heads to file pagecache. (Since 2.5.49.)
Disables 32-bit UIDs and GIDs. This is for interoperability with older
kernels which only store and expect 16-bit values.
@@ -1400,9 +1397,7 @@ filesystem.
.B journal_dev, noload, data, commit, orlov, oldalloc, [no]user_xattr
.B [no]acl, bsddf, minixdf, debug, errors, data_err, grpid, bsdgroups, nogrpid
-.B sysvgroups, resgid, resuid, sb, quota, noquota, grpquota, usrquota
+.B sysvgroups, resgid, resuid, sb, quota, noquota, grpquota and usrquota
are backwardly compatible with ext3 or ext2.
@@ -1527,11 +1522,11 @@ Controls whether or not ext4 should use the DIO read locking. If the
dioread_nolock option is specified ext4 will allocate uninitialized extent
before buffer write and convert the extent to initialized after IO completes.
This approach allows ext4 code to avoid using inode mutex, which improves
-scalability on high speed storages. However this does not work with nobh option
-and the mount will fail. Nor does it work with data journaling and
-dioread_nolock option will be ignored with kernel warning. Note that
-dioread_nolock code path is only used for extent-based files. Because of the
-restrictions this options comprises it is off by default (e.g. dioread_lock).
+scalability on high speed storages. However this does not work with data
+journaling and dioread_nolock option will be ignored with kernel warning.
+Note that dioread_nolock code path is only used for extent-based files.
+Because of the restrictions this options comprises it is off by default
Enable 64-bit inode version support. This option is off by default.