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authorTheodore Ts'o <tytso@mit.edu>2009-01-05 22:46:26 -0500
committerTheodore Ts'o <tytso@mit.edu>2009-01-05 22:46:26 -0500
commitb3881f74b31b7d47d0f1c4d89ac3e7f0b9c05e3e (patch)
tree131190b7ec627fd2ef2ecc818a7b9c17b83ccd63 /Documentation/filesystems
parent40a1984d22294ab202f616e432bb8d3481897675 (diff)
downloadop-kernel-dev-b3881f74b31b7d47d0f1c4d89ac3e7f0b9c05e3e.zip
op-kernel-dev-b3881f74b31b7d47d0f1c4d89ac3e7f0b9c05e3e.tar.gz
ext4: Add mount option to set kjournald's I/O priority
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/ext4.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index 9ec29d8..8938949 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -308,6 +308,13 @@ min_batch_time=usec This parameter sets the commit time (as
multi-threaded, synchronous workloads on very
fast disks, at the cost of increasing latency.
+journal_ioprio=prio The I/O priority (from 0 to 7, where 0 is the
+ highest priorty) which should be used for I/O
+ operations submitted by kjournald2 during a
+ commit operation. This defaults to 3, which is
+ a slightly higher priority than the default I/O
+ priority.
+
Data Mode
=========
There are 3 different data modes:
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