f2fs: introduce -o fastboot for reducing booting time only

If a system wants to reduce the booting time as a top priority, now we can
use a mount option, -o fastboot.
With this option, f2fs conducts a little bit slow write_checkpoint, but
it can avoid the node page reads during the next mount time.

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

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 5a9705842f10..d45f3f4d7f93 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -49,6 +49,7 @@
 #define F2FS_MOUNT_INLINE_DENTRY        0x00000200
 #define F2FS_MOUNT_FLUSH_MERGE          0x00000400
 #define F2FS_MOUNT_NOBARRIER            0x00000800
+#define F2FS_MOUNT_FASTBOOT             0x00001000
 
 #define clear_opt(sbi, option)  (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
 #define set_opt(sbi, option)    (sbi->mount_opt.opt |= F2FS_MOUNT_##option)