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fold security_file_free() into file_free()

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.. and the call of file_free() in case of security_file_alloc() failure
in get_empty_filp() should be simply file_free_rcu() - no point in
rcu-delays there, anyway.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2018-07-09 11:24:21 -04:00
parent c7e9075fb8
commit e8cff84faa
1 changed files with 4 additions and 6 deletions
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10
fs/file_table.c
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@ -51,6 +51,7 @@ static void file_free_rcu(struct rcu_head *head)
static inline void file_free(struct file *f)
{
security_file_free(f);
percpu_counter_dec(&nr_files);
call_rcu(&f->f_u.fu_rcuhead, file_free_rcu);
}
@ -123,11 +124,10 @@ struct file *get_empty_filp(void)
if (unlikely(!f))
return ERR_PTR(-ENOMEM);
percpu_counter_inc(&nr_files);
f->f_cred = get_cred(cred);
error = security_file_alloc(f);
if (unlikely(error)) {
file_free(f);
file_free_rcu(&f->f_u.fu_rcuhead);
return ERR_PTR(error);
}
@ -137,6 +137,7 @@ struct file *get_empty_filp(void)
mutex_init(&f->f_pos_lock);
eventpoll_init_file(f);
/* f->f_version: 0 */
percpu_counter_inc(&nr_files);
return f;
over:
@ -207,7 +208,6 @@ static void __fput(struct file *file)
}
if (file->f_op->release)
file->f_op->release(inode, file);
security_file_free(file);
if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL &&
!(file->f_mode & FMODE_PATH))) {
cdev_put(inode->i_cdev);
@ -302,10 +302,8 @@ EXPORT_SYMBOL(fput);
void put_filp(struct file *file)
{
if (atomic_long_dec_and_test(&file->f_count)) {
security_file_free(file);
if (atomic_long_dec_and_test(&file->f_count))
file_free(file);
}
}
void __init files_init(void)