tree 8a4f45d41c50b2f21b5bd2991ea879016c6d0fbc
parent b29555505d81e496fdbd125190c8043f3c09a83c
author Jaegeuk Kim <jaegeuk.kim@samsung.com> 1384236038 +0900
committer Jaegeuk Kim <jaegeuk.kim@samsung.com> 1387761480 +0900

f2fs: add a sysfs entry to control max_discards

If frequent small discards are issued to the device, the performance would
be degraded significantly.
So, this patch adds a sysfs entry to control the number of discards to be
issued during a checkpoint procedure.

By default, f2fs does not issue any small discards, which means max_discards
is zero.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>