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autofs: make dentry info count consistent 

JIRA: https://issues.redhat.com/browse/RHEL-33888
Status: Linus

commit 9ccbac76e71de411b9c4beea9d91ba98f3fad690
Author: Ian Kent <raven@themaw.net>
Date:   Fri Jul 8 09:43:06 2022 +0800

    autofs: make dentry info count consistent

    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@donald.themaw.net
    Signed-off-by: Ian Kent <raven@themaw.net>
    Cc: Al Viro <viro@ZenIV.linux.org.uk>
    Cc: David Howells <dhowells@redhat.com>
    Cc: Miklos Szeredi <miklos@szeredi.hu>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Signed-off-by: Ian Kent <ikent@redhat.com>
This commit is contained in:
Ian Kent 2024-05-22 08:53:08 +08:00 committed by Ian Kent
parent 5bee4d17af
commit 9958c76bbe
2 changed files with 1 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
fs/autofs/inode.c
View File

@ -20,6 +20,7 @@ struct autofs_info *autofs_new_ino(struct autofs_sb_info *sbi)
INIT_LIST_HEAD(&ino->expiring);
ino->last_used = jiffies;
ino->sbi = sbi;
ino->count = 1;
}
return ino;
}

4
fs/autofs/root.c
View File

@ -582,7 +582,6 @@ static int autofs_dir_symlink(struct user_namespace *mnt_userns,
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 inode *dir, struct dentry *dentry)
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 *dir, struct dentry *dentry)
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_namespace *mnt_userns,
autofs_set_leaf_automount_flags(dentry);
dget(dentry);
ino->count++;
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count++;
inc_nlink(dir);