From 0f7b2abd188089a44f60e2bf8521d1363ada9e12 Mon Sep 17 00:00:00 2001 From: Jaegeuk Kim Date: Wed, 23 Jul 2014 09:57:31 -0700 Subject: f2fs: add nobarrier mount option This patch adds a mount option, nobarrier, in f2fs. The assumption in here is that file system keeps the IO ordering, but doesn't care about cache flushes inside the storages. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim --- Documentation/filesystems/f2fs.txt | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'Documentation') diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt index 51afba17bbae..a2046a7d0a9d 100644 --- a/Documentation/filesystems/f2fs.txt +++ b/Documentation/filesystems/f2fs.txt @@ -126,6 +126,11 @@ flush_merge Merge concurrent cache_flush commands as much as possible to eliminate redundant command issues. If the underlying device handles the cache_flush command relatively slowly, recommend to enable this option. +nobarrier This option can be used if underlying storage guarantees + its cached data should be written to the novolatile area. + If this option is set, no cache_flush commands are issued + but f2fs still guarantees the write ordering of all the + data writes. ================================================================================ DEBUGFS ENTRIES -- cgit v1.2.3-59-g8ed1b