The patch titled
Subject: autofs: make dentry info count consistent
has been added to the -mm mm-nonmm-unstable branch. Its filename is
autofs-make-dentry-info-count-consistent.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/autofs-make-dentry-info-count-consistent.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Ian Kent <raven@xxxxxxxxxx>
Subject: autofs: make dentry info count consistent
Date: Fri, 08 Jul 2022 09:43:06 +0800
If an autofs dentry is a mount root directory there's no ->mkdir() call to
set its count to one.
To make the dentry info count consistent for all autofs dentries set count
to one when the dentry info struct is allocated.
Link: https://lkml.kernel.org/r/165724458671.30914.2902424437132835325.stgit@xxxxxxxxxxxxxxxxx
Signed-off-by: Ian Kent <raven@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Miklos Szeredi <miklos@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/autofs/inode.c | 1 +
fs/autofs/root.c | 4 ----
2 files changed, 1 insertion(+), 4 deletions(-)
--- a/fs/autofs/inode.c~autofs-make-dentry-info-count-consistent
+++ a/fs/autofs/inode.c
@@ -20,6 +20,7 @@ struct autofs_info *autofs_new_ino(struc
INIT_LIST_HEAD(&ino->expiring);
ino->last_used = jiffies;
ino->sbi = sbi;
+ ino->count = 1;
}
return ino;
}
--- a/fs/autofs/root.c~autofs-make-dentry-info-count-consistent
+++ a/fs/autofs/root.c
@@ -582,7 +582,6 @@ static int autofs_dir_symlink(struct use
d_add(dentry, inode);
dget(dentry);
- ino->count++;
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count++;
@@ -612,7 +611,6 @@ static int autofs_dir_unlink(struct inod
struct autofs_info *ino = autofs_dentry_ino(dentry);
struct autofs_info *p_ino;
- ino->count--;
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count--;
dput(ino->dentry);
@@ -695,7 +693,6 @@ static int autofs_dir_rmdir(struct inode
if (sbi->version < 5)
autofs_clear_leaf_automount_flags(dentry);
- ino->count--;
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count--;
dput(ino->dentry);
@@ -734,7 +731,6 @@ static int autofs_dir_mkdir(struct user_
autofs_set_leaf_automount_flags(dentry);
dget(dentry);
- ino->count++;
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count++;
inc_nlink(dir);
_
Patches currently in -mm which might be from raven@xxxxxxxxxx are
autofs-use-inode-permission-method-for-write-access.patch
autofs-make-dentry-info-count-consistent.patch
autofs-use-dentry-info-count-instead-of-simple_empty.patch
autofs-add-comment-about-autofs_mountpoint_changed.patch
autofs-remove-unused-ino-field-inode.patch
