[PATCH] mkfs: set BLKDISCARD by default

[Jaegeuk Kim <jaegeuk@kernel.org>]

And let's show some debug info as well.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
 mkfs/Makefile.am         | 2 +-
 mkfs/f2fs_format_utils.c | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/mkfs/Makefile.am b/mkfs/Makefile.am
index 68cab66..ff136a7 100644
--- a/mkfs/Makefile.am
+++ b/mkfs/Makefile.am
@@ -1,7 +1,7 @@
 ## Makefile.am
 
 AM_CPPFLAGS = ${libuuid_CFLAGS} -I$(top_srcdir)/include
-AM_CFLAGS = -Wall
+AM_CFLAGS = -Wall -DBLKDISCARD
 sbin_PROGRAMS = mkfs.f2fs
 mkfs_f2fs_SOURCES = f2fs_format_main.c f2fs_format.c f2fs_format_utils.c
 mkfs_f2fs_LDADD = ${libuuid_LIBS} $(top_builddir)/lib/libf2fs.la
diff --git a/mkfs/f2fs_format_utils.c b/mkfs/f2fs_format_utils.c
index 5cc2a32..8f7e094 100644
--- a/mkfs/f2fs_format_utils.c
+++ b/mkfs/f2fs_format_utils.c
@@ -36,8 +36,12 @@ int f2fs_trim_device()
 	if (S_ISREG(stat_buf.st_mode))
 		return 0;
 	else if (S_ISBLK(stat_buf.st_mode)) {
-		if (ioctl(config.fd, BLKDISCARD, &range) < 0)
+		if (ioctl(config.fd, BLKDISCARD, &range) < 0) {
 			MSG(0, "Info: This device doesn't support TRIM\n");
+		} else {
+			MSG(0, "Info: Discarded %lu sectors\n",
+						config.total_sectors);
+		}
 	} else
 		return -1;
 #endif
-- 
1.8.5.2 (Apple Git-48)


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