[PATCH] f2fs-tools: correct some confused desc about unit

[Zhiguo Niu]

F2FS_BLKSIZE may be 4KB, 16KB, so use F2FS_BLKSIZE to replace
some hardcode desc about unit in some f2fs_io cmd, also
adjust "-c" parameters in mkfs man, to be consistent with
commit c35fa8cd75ac ("mkfs.f2fs: change -c option description").

Signed-off-by: Zhiguo Niu <zhiguo.niu@xxxxxxxxxx>
---
 man/mkfs.f2fs.8         | 2 +-
 tools/f2fs_io/f2fs_io.c | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/man/mkfs.f2fs.8 b/man/mkfs.f2fs.8
index de885be..8b3b0cc 100644
--- a/man/mkfs.f2fs.8
+++ b/man/mkfs.f2fs.8
@@ -122,7 +122,7 @@ block size matches the page size.
 The default value is 4096.
 .TP
 .BI \-c " device-list"
-Build f2fs with these additional comma separated devices, so that the user can
+Build f2fs with these additional devices, so that the user can
 see all the devices as one big volume.
 Supports up to 7 devices except meta device.
 .TP
diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
index 95f575f..ee4ed0e 100644
--- a/tools/f2fs_io/f2fs_io.c
+++ b/tools/f2fs_io/f2fs_io.c
@@ -1013,7 +1013,7 @@ static void do_randread(int argc, char **argv, const struct cmd_desc *cmd)
 
 #define fiemap_desc "get block address in file"
 #define fiemap_help					\
-"f2fs_io fiemap [offset in 4kb] [count in 4kb] [file_path]\n\n"\
+"f2fs_io fiemap [offset in F2FS_BLKSIZE] [count in F2FS_BLKSIZE] [file_path]\n\n"\
 
 #if defined(HAVE_LINUX_FIEMAP_H) && defined(HAVE_LINUX_FS_H)
 static void do_fiemap(int argc, char **argv, const struct cmd_desc *cmd)
@@ -1617,8 +1617,8 @@ static void do_move_range(int argc, char **argv, const struct cmd_desc *cmd)
 #define gc_range_desc "trigger filesystem gc_range"
 #define gc_range_help "f2fs_io gc_range [sync_mode] [start] [length] [file_path]\n\n"\
 "  sync_mode : 0: asynchronous, 1: synchronous\n"			\
-"  start     : start offset of defragment region, unit: 4kb\n"	\
-"  length    : bytes number of defragment region, unit: 4kb\n"	\
+"  start     : start offset of defragment region, unit: F2FS_BLKSIZE\n"	\
+"  length    : bytes number of defragment region, unit: F2FS_BLKSIZE\n"	\
 
 static void do_gc_range(int argc, char **argv, const struct cmd_desc *cmd)
 {
-- 
1.9.1