admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

convert autofs

Browse Source 
creation/removal is via normal VFS paths; make ->mkdir() and ->symlink()
use d_make_persistent(); ->rmdir() and ->unlink() - d_make_discardable()
instead of dput() and that's it.

d_make_persistent() works for unhashed just fine...

Note that only persistent dentries are ever hashed there; unusual absense
of ->d_delete() in dentry_operations is due to that - anything that has
refcount reach 0 will be unhashed there, so it won't get to checking
->d_delete anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2024-05-09 12:44:53 -04:00
parent 4c7d25094f
commit b85d6b2419
2 changed files with 5 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
fs/autofs/inode.c
View File

@@ -55,7 +55,7 @@ void autofs_kill_sb(struct super_block *sb)
}
pr_debug("shutting down\n");
kill_litter_super(sb);
kill_anon_super(sb);
if (sbi)
kfree_rcu(sbi, rcu);
}

10
fs/autofs/root.c
View File

@@ -594,9 +594,8 @@ static int autofs_dir_symlink(struct mnt_idmap *idmap,
}
inode->i_private = cp;
inode->i_size = size;
d_add(dentry, inode);
dget(dentry);
d_make_persistent(dentry, inode);
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count++;
@@ -627,7 +626,7 @@ static int autofs_dir_unlink(struct inode *dir, struct dentry *dentry)
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count--;
dput(dentry);
d_make_discardable(dentry);
d_inode(dentry)->i_size = 0;
clear_nlink(d_inode(dentry));
@@ -709,7 +708,7 @@ static int autofs_dir_rmdir(struct inode *dir, struct dentry *dentry)
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count--;
dput(dentry);
d_make_discardable(dentry);
d_inode(dentry)->i_size = 0;
clear_nlink(d_inode(dentry));
@@ -739,12 +738,11 @@ static struct dentry *autofs_dir_mkdir(struct mnt_idmap *idmap,
inode = autofs_get_inode(dir->i_sb, S_IFDIR | mode);
if (!inode)
return ERR_PTR(-ENOMEM);
d_add(dentry, inode);
if (sbi->version < 5)
autofs_set_leaf_automount_flags(dentry);
dget(dentry);
d_make_persistent(dentry, inode);
p_ino = autofs_dentry_ino(dentry->d_parent);
p_ino->count++;
inc_nlink(dir);