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authorAl Viro <viro@zeniv.linux.org.uk>2023-09-20 00:12:00 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2024-02-25 02:10:32 -0500
commite31f0a57ae1ab2f6e17adb8e602bc120ad722232 (patch)
tree7b8fa35282a310a6ead52901ede07fdbabc01723 /include/linux/proc_fs.h
parent47458802f6606f652cd0f6dc38cd52ce60ec0145 (diff)
procfs: make freeing proc_fs_info rcu-delayed
makes proc_pid_ns() safe from rcu pathwalk (put_pid_ns() is still synchronous, but that's not a problem - it does rcu-delay everything that needs to be) Reviewed-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/proc_fs.h')
-rw-r--r--include/linux/proc_fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index de407e7c3b55..0b2a89854440 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -65,6 +65,7 @@ struct proc_fs_info {
kgid_t pid_gid;
enum proc_hidepid hide_pid;
enum proc_pidonly pidonly;
+ struct rcu_head rcu;
};
static inline struct proc_fs_info *proc_sb_info(struct super_block *sb)