Re: [f2fs-dev] [PATCH 2/2 v2] f2fs_io: add dsync option for write

[Jaegeuk Kim <jaegeuk@kernel.org>]

This adds a write option having O_DIRECT | O_DSYNC.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

  Change log from v1: 
   - update man page

 man/f2fs_io.8           | 3 +++
 tools/f2fs_io/f2fs_io.c | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/man/f2fs_io.8 b/man/f2fs_io.8
index 8a2c37489939..af7325add388 100644
--- a/man/f2fs_io.8
+++ b/man/f2fs_io.8
@@ -76,6 +76,9 @@ buffered I/O
 .TP
 .B dio
 direct I/O
+.TP
+.B dsync
+direct I/O with O_DSYNC
 .RE
 .TP
 \fBread\fR \fI[chunk_size in 4kb] [offset in chunk_size] [count] [IO] [print_nbytes] [file_path]\fR
diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
index 2f0fc7b25d41..e7359836b126 100644
--- a/tools/f2fs_io/f2fs_io.c
+++ b/tools/f2fs_io/f2fs_io.c
@@ -508,7 +508,8 @@ static void do_erase(int argc, char **argv, const struct cmd_desc *cmd)
 "  rand          : random numbers\n"			\
 "IO can be\n"						\
 "  buffered      : buffered IO\n"			\
-"  dio           : direct IO\n"				\
+"  dio           : O_DIRECT\n"				\
+"  dsync         : O_DIRECT | O_DSYNC\n"		\
 "  osync         : O_SYNC\n"				\
 "  atomic_commit : atomic write & commit\n"		\
 "  atomic_abort  : atomic write & abort\n"		\
@@ -552,6 +553,8 @@ static void do_write(int argc, char **argv, const struct cmd_desc *cmd)
 
 	if (!strcmp(argv[5], "dio"))
 		flags |= O_DIRECT;
+	else if (!strcmp(argv[5], "dsync"))
+		flags |= O_DIRECT | O_DSYNC;
 	else if (!strcmp(argv[5], "osync"))
 		flags |= O_SYNC;
 	else if (!strcmp(argv[5], "atomic_commit"))
-- 
2.36.1.476.g0c4daa206d-goog




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