linux-toradex.git/Documentation/filesystems/f2fs.txt, branch v4.4.72

f2fs: introduce background_gc=sync mount option

2015-10-09T23:20:57+00:00

This patch introduce background_gc=sync enabling synchronous cleaning in
background.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: add noextent_cache mount option

2015-08-04T21:09:55+00:00

This patch adds noextent_cache mount option.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: enable inline data by default

2015-04-10T22:08:52+00:00

Enable inline_data feature by default since it brings us better
performance and space utilization and now has already stable.
Add another option noinline_data to disable it during mount.

Suggested-by: Jaegeuk Kim 
Suggested-by: Chao Yu 
Signed-off-by: Wanpeng Li 
Signed-off-by: Jaegeuk Kim

f2fs: add a mount option for rb-tree extent cache

2015-03-03T17:58:46+00:00

This patch adds a mount option 'extent_cache' in f2fs.

It is try to use a rb-tree based extent cache to cache more mapping information
with less memory if this option is set, otherwise we will use the original one
extent info cache.

Suggested-by: Changman Lee 
Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: introduce a batched trim

2015-02-12T01:04:44+00:00

This patch introduces a batched trimming feature, which submits split discard
commands.

This is to avoid long latency due to huge trim commands.
If fstrim was triggered ranging from 0 to the end of device, we should lock
all the checkpoint-related mutexes, resulting in very long latency.

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: support norecovery mount option

2015-02-12T01:04:40+00:00

This patch adds a mount option, norecovery, which is mostly same as
disable_roll_forward. The only difference is that norecovery should be activated
with read-only mount option.

This can be used when user wants to check whether f2fs is mountable or not
without any recovery process. (e.g., xfstests/200)

Reviewed-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: introduce -o fastboot for reducing booting time only

2014-11-05T01:34:15+00:00

If a system wants to reduce the booting time as a top priority, now we can
use a mount option, -o fastboot.
With this option, f2fs conducts a little bit slow write_checkpoint, but
it can avoid the node page reads during the next mount time.

Signed-off-by: Jaegeuk Kim

f2fs: update f2fs documentation for inline dir support

2014-11-04T00:07:32+00:00

This patch adds descriptions for the inline dir support in f2fs document.

Signed-off-by: Chao Yu 
Signed-off-by: Jaegeuk Kim

f2fs: change the ipu_policy option to enable combinations

2014-09-23T18:10:24+00:00

This patch changes the ipu_policy setting to use any combination of orthogonal policies.

Signed-off-by: Changman Lee 
Signed-off-by: Jaegeuk Kim

f2fs: give an option to enable in-place-updates during fsync to users

2014-09-16T11:10:44+00:00

If user wrote F2FS_IPU_FSYNC:4 in /sys/fs/f2fs/ipu_policy, f2fs_sync_file
only starts to try in-place-updates.
And, if the number of dirty pages is over /sys/fs/f2fs/min_fsync_blocks, it
keeps out-of-order manner. Otherwise, it triggers in-place-updates.

This may be used by storage showing very high random write performance.

For example, it can be used when,

Seq. writes (Data) + wait + Seq. writes (Node)

is pretty much slower than,

Rand. writes (Data)

Signed-off-by: Jaegeuk Kim