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authorJaegeuk Kim <jaegeuk@kernel.org>2014-07-23 09:57:31 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2014-07-29 05:27:48 -0700
commit0f7b2abd188089a44f60e2bf8521d1363ada9e12 (patch)
treeb03702e8aadcf265bb796c3ec31413ea081fb136 /Documentation/filesystems
parent9d847950770da7102d4efc02d0939ce28e3a7dd0 (diff)
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 <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/f2fs.txt5
1 files changed, 5 insertions, 0 deletions
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.
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