[PATCH 2/3] vfs: cleanup show_mountinfo

Dmitry V. Levin
2013-01-30T01:38:00Z

Starting with commit v3.2-rc4-1-g02125a8, seq_path_root() no longer
changes the value of its "struct path *root" argument.
Starting with commit v3.2-rc7-104-g8c9379e, the "struct path *root"
argument of seq_path_root() is const.
As result, the temporary variable "root" in show_mountinfo() that
holds a copy of struct path root is no longer needed.

Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
---
fs/proc_namespace.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c
index 5fe34c3..10aa92d 100644
--- a/fs/proc_namespace.c
+++ b/fs/proc_namespace.c
@@ -125,7 +125,6 @@ static int show_mountinfo(struct seq_file *m, struct vfsmount *mnt)
struct mount *r = real_mount(mnt);
struct super_block *sb = mnt->mnt_sb;
struct path mnt_path = { .dentry = mnt->mnt_root, .mnt = mnt };
- struct path root = p->root;
int err = 0;

seq_printf(m, "%i %i %u:%u ", r->mnt_id, r->mnt_parent->mnt_id,
@@ -139,7 +138,7 @@ static int show_mountinfo(struct seq_file *m, struct vfsmount *mnt)
seq_putc(m, ' ');

/* mountpoints outside of chroot jail will give SEQ_SKIP on this */
- err = seq_path_root(m, &mnt_path, &root, " \t\n\\");
+ err = seq_path_root(m, &mnt_path, &p->root, " \t\n\\");
if (err)
goto out;

--
ldv