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f2fs: introduce FITRIM in f2fs_ioctl

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This patch introduces FITRIM in f2fs_ioctl.
In this case, f2fs will issue small discards and prefree discards as many as
possible for the given area.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2014-09-20 22:06:39 -07:00
commit 4b2fecc846
6 changed files with 136 additions and 14 deletions
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3
include/trace/events/f2fs.h
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@ -72,7 +72,8 @@
#define show_cpreason(type) \
__print_symbolic(type, \
{ CP_UMOUNT, "Umount" }, \
{ CP_SYNC, "Sync" })
{ CP_SYNC, "Sync" }, \
{ CP_DISCARD, "Discard" })
struct victim_sel_policy;