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f2fs: introduce mode=lfs mount option

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This mount option is to enable original log-structured filesystem forcefully.
So, there should be no random writes for main area.

Especially, this supports host-managed SMR device.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2016-06-03 19:29:38 -07:00
parent aa98727329
commit 36abef4e79
9 changed files with 74 additions and 4 deletions
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Documentation/filesystems/f2fs.txt
+3
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@@ -151,6 +151,9 @@ noinline_data Disable the inline data feature, inline data feature is
enabled by default.
data_flush Enable data flushing before checkpoint in order to
persist data of regular and symlink.
mode=%s Control block allocation mode which supports "adaptive"
and "lfs". In "lfs" mode, there should be no random
writes towards main area.
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DEBUGFS ENTRIES