As inode creation is protected by sysfs_mutex, ilookup5_nowait()
always either fails to find at all or finds one which is fully
initialized, so using ilookup5_nowait() or ilookup5() doesn't make any
difference. Switch to ilookup5() as it's planned to be removed. This
change also makes lookup return value handling a bit simpler.
This change was suggested by Al Viro.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Al Viro <viro@hera.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
memset(acxt, 0, sizeof(*acxt));
acxt->parent_sd = parent_sd;
memset(acxt, 0, sizeof(*acxt));
acxt->parent_sd = parent_sd;
- /* Lookup parent inode. inode initialization and I_NEW
- * clearing are protected by sysfs_mutex. By grabbing it and
- * looking up with _nowait variant, inode state can be
- * determined reliably.
+ /* Lookup parent inode. inode initialization is protected by
+ * sysfs_mutex, so inode existence can be determined by
+ * looking up inode while holding sysfs_mutex.
*/
mutex_lock(&sysfs_mutex);
*/
mutex_lock(&sysfs_mutex);
- inode = ilookup5_nowait(sysfs_sb, parent_sd->s_ino, sysfs_ilookup_test,
- parent_sd);
+ inode = ilookup5(sysfs_sb, parent_sd->s_ino, sysfs_ilookup_test,
+ parent_sd);
+ if (inode) {
+ WARN_ON(inode->i_state & I_NEW);
- if (inode && !(inode->i_state & I_NEW)) {
/* parent inode available */
acxt->parent_inode = inode;
/* parent inode available */
acxt->parent_inode = inode;
mutex_lock(&inode->i_mutex);
mutex_lock(&sysfs_mutex);
}
mutex_lock(&inode->i_mutex);
mutex_lock(&sysfs_mutex);
}