Signed-off-by: Jaegeuk Kim <[email protected]>
---
tools/f2fs_io/f2fs_io.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
index 4429e0b0459c..08f3c9b79cdf 100644
--- a/tools/f2fs_io/f2fs_io.c
+++ b/tools/f2fs_io/f2fs_io.c
@@ -938,6 +938,7 @@ static void do_write_advice(int argc, char **argv, const
struct cmd_desc *cmd)
" dontcache: buffered IO + dontcache\n" \
" dio : direct IO\n" \
" mmap : mmap IO\n" \
+" mlock : mmap + mlock\n" \
" madvise : mmap + mlock2 + madvise\n" \
" fadvise : mmap + fadvise + mlock\n" \
"advice can be\n" \
@@ -956,6 +957,7 @@ static void do_read(int argc, char **argv, const struct
cmd_desc *cmd)
u64 mlock_time_start = 0, mlock_time_end = 0;
int flags = 0;
int do_mmap = 0;
+ int do_mlock = 0;
int do_fadvise = 0;
int do_madvise = 0;
int do_dontcache = 0;
@@ -981,6 +983,8 @@ static void do_read(int argc, char **argv, const struct
cmd_desc *cmd)
flags |= O_DIRECT;
else if (!strcmp(argv[4], "mmap"))
do_mmap = 1;
+ else if (!strcmp(argv[4], "mlock"))
+ do_mlock = 1;
else if (!strcmp(argv[4], "madvise"))
do_madvise = 1;
else if (!strcmp(argv[4], "fadvise"))
@@ -1027,6 +1031,18 @@ static void do_read(int argc, char **argv, const struct
cmd_desc *cmd)
mlock_time_end = get_current_us();
read_cnt = count * buf_size;
memcpy(print_buf, data, print_bytes);
+ } else if (do_mlock) {
+ data = mmap(NULL, count * buf_size, PROT_READ,
+ MAP_SHARED, fd, offset);
+ if (data == MAP_FAILED)
+ die("Mmap failed");
+
+ io_time_start = get_current_us();
+ if (mlock(data, count * buf_size))
+ die_errno("mlock failed");
+ io_time_end = get_current_us();
+ read_cnt = count * buf_size;
+ memcpy(print_buf, data, print_bytes);
} else if (do_madvise) {
data = mmap(NULL, count * buf_size, PROT_READ,
MAP_SHARED, fd, offset);
--
2.52.0.305.g3fc767764a-goog
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