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Use kill_litter_super() in autofs4 ->kill_sb()
... and get rid of open-coding its guts (i.e. RIP autofs4_force_release()) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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parent
3899167dbd
commit
5b7e934d88
@ -96,63 +96,6 @@ void autofs4_free_ino(struct autofs_info *ino)
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kfree(ino);
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}
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/*
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* Deal with the infamous "Busy inodes after umount ..." message.
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*
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* Clean up the dentry tree. This happens with autofs if the user
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* space program goes away due to a SIGKILL, SIGSEGV etc.
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*/
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static void autofs4_force_release(struct autofs_sb_info *sbi)
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{
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struct dentry *this_parent = sbi->sb->s_root;
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struct list_head *next;
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if (!sbi->sb->s_root)
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return;
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spin_lock(&dcache_lock);
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repeat:
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next = this_parent->d_subdirs.next;
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resume:
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while (next != &this_parent->d_subdirs) {
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struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
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/* Negative dentry - don`t care */
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if (!simple_positive(dentry)) {
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next = next->next;
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continue;
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}
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if (!list_empty(&dentry->d_subdirs)) {
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this_parent = dentry;
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goto repeat;
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}
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next = next->next;
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spin_unlock(&dcache_lock);
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DPRINTK("dentry %p %.*s",
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dentry, (int)dentry->d_name.len, dentry->d_name.name);
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dput(dentry);
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spin_lock(&dcache_lock);
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}
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if (this_parent != sbi->sb->s_root) {
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struct dentry *dentry = this_parent;
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next = this_parent->d_u.d_child.next;
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this_parent = this_parent->d_parent;
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spin_unlock(&dcache_lock);
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DPRINTK("parent dentry %p %.*s",
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dentry, (int)dentry->d_name.len, dentry->d_name.name);
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dput(dentry);
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spin_lock(&dcache_lock);
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goto resume;
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}
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spin_unlock(&dcache_lock);
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}
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void autofs4_kill_sb(struct super_block *sb)
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{
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struct autofs_sb_info *sbi = autofs4_sbi(sb);
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@ -169,15 +112,12 @@ void autofs4_kill_sb(struct super_block *sb)
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/* Free wait queues, close pipe */
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autofs4_catatonic_mode(sbi);
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/* Clean up and release dangling references */
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autofs4_force_release(sbi);
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sb->s_fs_info = NULL;
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kfree(sbi);
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out_kill_sb:
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DPRINTK("shutting down");
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kill_anon_super(sb);
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kill_litter_super(sb);
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}
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static int autofs4_show_options(struct seq_file *m, struct vfsmount *mnt)
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