From f6c7a1f34e92b0b561024ead9fa70623683025e4 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 2 Oct 2006 02:17:07 -0700 Subject: [PATCH] [PATCH] proc: give the root directory a task Helper functions in base.c like proc_pident_readdir and proc_pident_lookup assume the directories have an associated task, and cannot currently be used on the /proc root directory because it does not have such a task. This small changes allows for base.c to be simplified and later when multiple pid spaces are introduced it makes getting the needed context information trivial. Signed-off-by: Eric W. Biederman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/root.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/fs/proc/root.c b/fs/proc/root.c index 8901c65caca8..ffe66c38488b 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -16,6 +16,7 @@ #include #include #include +#include #include "internal.h" @@ -28,6 +29,17 @@ struct proc_dir_entry *proc_sys_root; static int proc_get_sb(struct file_system_type *fs_type, int flags, const char *dev_name, void *data, struct vfsmount *mnt) { + if (proc_mnt) { + /* Seed the root directory with a pid so it doesn't need + * to be special in base.c. I would do this earlier but + * the only task alive when /proc is mounted the first time + * is the init_task and it doesn't have any pids. + */ + struct proc_inode *ei; + ei = PROC_I(proc_mnt->mnt_sb->s_root->d_inode); + if (!ei->pid) + ei->pid = find_get_pid(1); + } return get_sb_single(fs_type, flags, data, proc_fill_super, mnt); } -- 2.30.2