libfs: make simple attributes interruptible

[net-next-2.6.git] / fs / libfs.c

diff --git a/fs/libfs.c b/fs/libfs.c
index 2319415ddb5e966fd99f3851460adfcad55de440..d6de56a6e18371170056633039343573d9a3a1e4 100644 (file)
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -634,7 +634,10 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
        if (!attr->get)
                return -EACCES;
 
-       mutex_lock(&attr->mutex);
+       ret = mutex_lock_interruptible(&attr->mutex);
+       if (ret)
+               return ret;
+
        if (*ppos) {            /* continued read */
                size = strlen(attr->get_buf);
        } else {                /* first read */
@@ -666,7 +669,10 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
        if (!attr->set)
                return -EACCES;
 
-       mutex_lock(&attr->mutex);
+       ret = mutex_lock_interruptible(&attr->mutex);
+       if (ret)
+               return ret;
+
        ret = -EFAULT;
        size = min(sizeof(attr->set_buf) - 1, len);
        if (copy_from_user(attr->set_buf, buf, size))