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authorLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 10:36:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 10:36:31 -0700
commit4fc29c1aa375353ffe7c8fa171bf941b71ce29ef (patch)
tree5d4fa5f8c95831655cb89f1a37c0ea5daf847fbd /Documentation
parent0e6acf0204da5b8705722a5f6806a4f55ed379d6 (diff)
parent5302fb000def84100740a84d7f176c0e167b2141 (diff)
downloadlwn-4fc29c1aa375353ffe7c8fa171bf941b71ce29ef.tar.gz
lwn-4fc29c1aa375353ffe7c8fa171bf941b71ce29ef.zip
Merge tag 'for-f2fs-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim: "The major change in this version is mitigating cpu overheads on write paths by replacing redundant inode page updates with mark_inode_dirty calls. And we tried to reduce lock contentions as well to improve filesystem scalability. Other feature is setting F2FS automatically when detecting host-managed SMR. Enhancements: - ioctl to move a range of data between files - inject orphan inode errors - avoid flush commands congestion - support lazytime Bug fixes: - return proper results for some dentry operations - fix deadlock in add_link failure - disable extent_cache for fcollapse/finsert" * tag 'for-f2fs-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (68 commits) f2fs: clean up coding style and redundancy f2fs: get victim segment again after new cp f2fs: handle error case with f2fs_bug_on f2fs: avoid data race when deciding checkpoin in f2fs_sync_file f2fs: support an ioctl to move a range of data blocks f2fs: fix to report error number of f2fs_find_entry f2fs: avoid memory allocation failure due to a long length f2fs: reset default idle interval value f2fs: use blk_plug in all the possible paths f2fs: fix to avoid data update racing between GC and DIO f2fs: add maximum prefree segments f2fs: disable extent_cache for fcollapse/finsert inodes f2fs: refactor __exchange_data_block for speed up f2fs: fix ERR_PTR returned by bio f2fs: avoid mark_inode_dirty f2fs: move i_size_write in f2fs_write_end f2fs: fix to avoid redundant discard during fstrim f2fs: avoid mismatching block range for discard f2fs: fix incorrect f_bfree calculation in ->statfs f2fs: use percpu_rw_semaphore ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/filesystems/f2fs.txt7
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/filesystems/f2fs.txt b/Documentation/filesystems/f2fs.txt
index e1c9f0849da6..ecd808088362 100644
--- a/Documentation/filesystems/f2fs.txt
+++ b/Documentation/filesystems/f2fs.txt
@@ -109,7 +109,9 @@ background_gc=%s Turn on/off cleaning operations, namely garbage
disable_roll_forward Disable the roll-forward recovery routine
norecovery Disable the roll-forward recovery routine, mounted read-
only (i.e., -o ro,disable_roll_forward)
-discard Issue discard/TRIM commands when a segment is cleaned.
+discard/nodiscard Enable/disable real-time discard in f2fs, if discard is
+ enabled, f2fs will issue discard/TRIM commands when a
+ segment is cleaned.
no_heap Disable heap-style segment allocation which finds free
segments for data from the beginning of main area, while
for node from the end of main area.
@@ -151,6 +153,9 @@ 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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