From 773bc4f3b6898634a80a41c72a1f34cb89992dcd Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Mon, 5 Jul 2010 13:00:08 +0900 Subject: nilfs2: add barrier mount option Nilfs enables write barriers by default and has "nobarrier" mount option to disable this feature. But it lacks the complementary option and has no way to re-enable the feature on remount. This adds "barrier" option to resolve this imbalance. Signed-off-by: Ryusuke Konishi --- Documentation/filesystems/nilfs2.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'Documentation/filesystems/nilfs2.txt') diff --git a/Documentation/filesystems/nilfs2.txt b/Documentation/filesystems/nilfs2.txt index d3e7673995eb..54f61c0ff442 100644 --- a/Documentation/filesystems/nilfs2.txt +++ b/Documentation/filesystems/nilfs2.txt @@ -49,7 +49,10 @@ Mount options NILFS2 supports the following mount options: (*) == default -nobarrier Disables barriers. +barrier(*) This enables/disables the use of write barriers. This +nobarrier requires an IO stack which can support barriers, and + if nilfs gets an error on a barrier write, it will + disable again with a warning. errors=continue Keep going on a filesystem error. errors=remount-ro(*) Remount the filesystem read-only on an error. errors=panic Panic and halt the machine if an error occurs. -- cgit v1.2.3