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Subject[PATCH 6/6 resend] statfs: add ST_PRIVATE
Date
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---
fs/statfs.c | 2 ++
include/linux/statfs.h | 1 +
2 files changed, 3 insertions(+)

diff --git a/fs/statfs.c b/fs/statfs.c
index 35ad0402c9a3..899e899ee84c 100644
--- a/fs/statfs.c
+++ b/fs/statfs.c
@@ -58,6 +58,8 @@ static int calculate_f_flags(struct vfsmount *mnt)

if (IS_MNT_SLAVE(real_mount(mnt)))
flags |= ST_SLAVE;
+ else if (!(flags & ST_SHARED))
+ flags |= ST_PRIVATE;

return flags;
}
diff --git a/include/linux/statfs.h b/include/linux/statfs.h
index 048127effaad..663fa5498a7d 100644
--- a/include/linux/statfs.h
+++ b/include/linux/statfs.h
@@ -41,6 +41,7 @@ struct kstatfs {
#define ST_NODIRATIME (1<<11) /* do not update directory access times */
#define ST_RELATIME (1<<12) /* update atime relative to mtime/ctime */
#define ST_UNBINDABLE (1<<17) /* change to unbindable */
+#define ST_PRIVATE (1<<18) /* change to private */
#define ST_SLAVE (1<<19) /* change to slave */
#define ST_SHARED (1<<20) /* change to shared */

--
2.17.0
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