Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-omap-h63xx.git] / Documentation / filesystems / ext3.txt

diff --git a/Documentation/filesystems/ext3.txt b/Documentation/filesystems/ext3.txt
index afb1335c05d6fb5db31402dcd33c9a1ff21fb275..9dd2a3bb2acc87b85d473a2080284910f04f8585 100644 (file)
--- a/Documentation/filesystems/ext3.txt
+++ b/Documentation/filesystems/ext3.txt
@@ -96,6 +96,11 @@ errors=remount-ro(*) Remount the filesystem read-only on an error.
 errors=continue                Keep going on a filesystem error.
 errors=panic           Panic and halt the machine if an error occurs.
 
+data_err=ignore(*)     Just print an error message if an error occurs
+                       in a file data buffer in ordered mode.
+data_err=abort         Abort the journal if an error occurs in a file
+                       data buffer in ordered mode.
+
 grpid                  Give objects the same group ID as their creator.
 bsdgroups
 
@@ -113,6 +118,14 @@ noquota
 grpquota
 usrquota
 
+bh             (*)     ext3 associates buffer heads to data pages to
+nobh                   (a) cache disk block mapping information
+                       (b) link pages into transaction to provide
+                           ordering guarantees.
+                       "bh" option forces use of buffer heads.
+                       "nobh" option tries to avoid associating buffer
+                       heads (supported only for "writeback" mode).
+
 
 Specification
 =============
@@ -122,12 +135,12 @@ Device layer.
 
 Journaling Block Device layer
 -----------------------------
-The Journaling Block Device layer (JBD) isn't ext3 specific.  It was design to
-add journaling capabilities on a block device.  The ext3 filesystem code will
-inform the JBD of modifications it is performing (called a transaction).  The
-journal supports the transactions start and stop, and in case of crash, the
-journal can replayed the transactions to put the partition back in a
-consistent state fast.
+The Journaling Block Device layer (JBD) isn't ext3 specific.  It was designed
+to add journaling capabilities to a block device.  The ext3 filesystem code
+will inform the JBD of modifications it is performing (called a transaction).
+The journal supports the transactions start and stop, and in case of a crash,
+the journal can replay the transactions to quickly put the partition back into
+a consistent state.
 
 Handles represent a single atomic update to a filesystem.  JBD can handle an
 external journal on a block device.
@@ -156,7 +169,7 @@ written to the journal first, and then to its final location.
 In the event of a crash, the journal can be replayed, bringing both data and
 metadata into a consistent state.  This mode is the slowest except when data
 needs to be read from and written to disk at the same time where it
-outperforms all others modes.
+outperforms all other modes.
 
 Compatibility
 -------------
@@ -185,6 +198,5 @@ kernel source:      <file:fs/ext3/>
 programs:      http://e2fsprogs.sourceforge.net/
                http://ext2resize.sourceforge.net
 
-useful links:  http://www.zip.com.au/~akpm/linux/ext3/ext3-usage.html
-               http://www-106.ibm.com/developerworks/linux/library/l-fs7/
+useful links:  http://www-106.ibm.com/developerworks/linux/library/l-fs7/
                http://www-106.ibm.com/developerworks/linux/library/l-fs8/