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[patch 7/7] vfs: mountinfo: show dominating group id

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Show peer group ID of nearest dominating group that has intersection
with the mount's namespace.

Signed-off-by: Miklos Szeredi <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Miklos Szeredi 2008-03-27 13:06:26 +01:00 • committed by Al Viro
commit 97e7e0f71d
4 changed files with 65 additions and 2 deletions
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9
fs/namespace.c
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@ -850,8 +850,13 @@ static int show_mountinfo(struct seq_file *m, void *v)
/* Tagged fields ("foo:X" or "bar") */
if (IS_MNT_SHARED(mnt))
seq_printf(m, " shared:%i", mnt->mnt_group_id);
if (IS_MNT_SLAVE(mnt))
seq_printf(m, " master:%i", mnt->mnt_master->mnt_group_id);
if (IS_MNT_SLAVE(mnt)) {
int master = mnt->mnt_master->mnt_group_id;
int dom = get_dominating_id(mnt, &p->root);
seq_printf(m, " master:%i", master);
if (dom && dom != master)
seq_printf(m, " propagate_from:%i", dom);
}
if (IS_MNT_UNBINDABLE(mnt))
seq_puts(m, " unbindable");