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| author | Michal Marek <mmarek@suse.cz> | 2010-10-28 00:15:57 +0200 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2010-10-28 00:15:57 +0200 |
| commit | b74b953b998bcc2db91b694446f3a2619ec32de6 (patch) | |
| tree | 6ce24caabd730f6ae9287ed0676ec32e6ff31e9d /Documentation/filesystems/ext3.txt | |
| parent | abb438526201c6a79949ad45375c051b6681c253 (diff) | |
| parent | f6f94e2ab1b33f0082ac22d71f66385a60d8157f (diff) | |
| download | linux-stable-b74b953b998bcc2db91b694446f3a2619ec32de6.tar.gz linux-stable-b74b953b998bcc2db91b694446f3a2619ec32de6.tar.bz2 linux-stable-b74b953b998bcc2db91b694446f3a2619ec32de6.zip | |
Merge commit 'v2.6.36' into kbuild/misc
Update to be able to fix a recent change to scripts/basic/docproc.c
(commit eda603f).
Diffstat (limited to 'Documentation/filesystems/ext3.txt')
| -rw-r--r-- | Documentation/filesystems/ext3.txt | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/Documentation/filesystems/ext3.txt b/Documentation/filesystems/ext3.txt index 867c5b50cb42..272f80d5f966 100644 --- a/Documentation/filesystems/ext3.txt +++ b/Documentation/filesystems/ext3.txt @@ -59,8 +59,19 @@ commit=nrsec (*) Ext3 can be told to sync all its data and metadata Setting it to very large values will improve performance. -barrier=1 This enables/disables barriers. barrier=0 disables - it, barrier=1 enables it. +barrier=<0(*)|1> This enables/disables the use of write barriers in +barrier the jbd code. barrier=0 disables, barrier=1 enables. +nobarrier (*) This also requires an IO stack which can support + barriers, and if jbd gets an error on a barrier + write, it will disable again with a warning. + Write barriers enforce proper on-disk ordering + of journal commits, making volatile disk write caches + safe to use, at some performance penalty. If + your disks are battery-backed in one way or another, + disabling barriers may safely improve performance. + The mount options "barrier" and "nobarrier" can + also be used to enable or disable barriers, for + consistency with other ext3 mount options. orlov (*) This enables the new Orlov block allocator. It is enabled by default. |