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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net Signed-off-by: Jaegeuk Kim --- Change log from v1: - give mlock/io time together 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..1b290bc669f8 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 = mlock_time_start = get_current_us(); + if (mlock(data, count * buf_size)) + die_errno("mlock failed"); + io_time_end = mlock_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 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel