From bbd5192412fdedbae00888316bfe350bf89d0458 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 13 Feb 2014 10:24:23 -0800 Subject: [PATCH] proc: Update proc_flush_task_mnt to use d_invalidate Now that d_invalidate always succeeds and flushes mount points use it in stead of a combination of shrink_dcache_parent and d_drop in proc_flush_task_mnt. This removes the danger of a mount point under /proc//... becoming unreachable after the d_drop. Reviewed-by: Miklos Szeredi Signed-off-by: "Eric W. Biederman" Signed-off-by: Al Viro --- fs/proc/base.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/proc/base.c b/fs/proc/base.c index b4fe0ee08942..00cd85f18bcc 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2639,8 +2639,7 @@ static void proc_flush_task_mnt(struct vfsmount *mnt, pid_t pid, pid_t tgid) /* no ->d_hash() rejects on procfs */ dentry = d_hash_and_lookup(mnt->mnt_root, &name); if (dentry) { - shrink_dcache_parent(dentry); - d_drop(dentry); + d_invalidate(dentry); dput(dentry); } @@ -2660,8 +2659,7 @@ static void proc_flush_task_mnt(struct vfsmount *mnt, pid_t pid, pid_t tgid) name.len = snprintf(buf, sizeof(buf), "%d", pid); dentry = d_hash_and_lookup(dir, &name); if (dentry) { - shrink_dcache_parent(dentry); - d_drop(dentry); + d_invalidate(dentry); dput(dentry); } -- 2.39.5