Input: bcm5974 - add support for the 2013 MacBook Air

[~andy/linux] / fs / read_write.c

diff --git a/fs/read_write.c b/fs/read_write.c
index 90ba3b350e5063daa547f35814fd5e4c8c660a4f..03430008704e68fd74470e8dbb9fcb637dce3f97 100644 (file)
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -9,6 +9,7 @@
 #include <linux/fcntl.h>
 #include <linux/file.h>
 #include <linux/uio.h>
+#include <linux/aio.h>
 #include <linux/fsnotify.h>
 #include <linux/security.h>
 #include <linux/export.h>
@@ -329,16 +330,6 @@ int rw_verify_area(int read_write, struct file *file, loff_t *ppos, size_t count
        return count > MAX_RW_COUNT ? MAX_RW_COUNT : count;
 }
 
-static void wait_on_retry_sync_kiocb(struct kiocb *iocb)
-{
-       set_current_state(TASK_UNINTERRUPTIBLE);
-       if (!kiocbIsKicked(iocb))
-               schedule();
-       else
-               kiocbClearKicked(iocb);
-       __set_current_state(TASK_RUNNING);
-}
-
 ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)
 {
        struct iovec iov = { .iov_base = buf, .iov_len = len };
@@ -350,13 +341,7 @@ ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *pp
        kiocb.ki_left = len;
        kiocb.ki_nbytes = len;
 
-       for (;;) {
-               ret = filp->f_op->aio_read(&kiocb, &iov, 1, kiocb.ki_pos);
-               if (ret != -EIOCBRETRY)
-                       break;
-               wait_on_retry_sync_kiocb(&kiocb);
-       }
-
+       ret = filp->f_op->aio_read(&kiocb, &iov, 1, kiocb.ki_pos);
        if (-EIOCBQUEUED == ret)
                ret = wait_on_sync_kiocb(&kiocb);
        *ppos = kiocb.ki_pos;
@@ -406,13 +391,7 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof
        kiocb.ki_left = len;
        kiocb.ki_nbytes = len;
 
-       for (;;) {
-               ret = filp->f_op->aio_write(&kiocb, &iov, 1, kiocb.ki_pos);
-               if (ret != -EIOCBRETRY)
-                       break;
-               wait_on_retry_sync_kiocb(&kiocb);
-       }
-
+       ret = filp->f_op->aio_write(&kiocb, &iov, 1, kiocb.ki_pos);
        if (-EIOCBQUEUED == ret)
                ret = wait_on_sync_kiocb(&kiocb);
        *ppos = kiocb.ki_pos;
@@ -592,13 +571,7 @@ static ssize_t do_sync_readv_writev(struct file *filp, const struct iovec *iov,
        kiocb.ki_left = len;
        kiocb.ki_nbytes = len;
 
-       for (;;) {
-               ret = fn(&kiocb, iov, nr_segs, kiocb.ki_pos);
-               if (ret != -EIOCBRETRY)
-                       break;
-               wait_on_retry_sync_kiocb(&kiocb);
-       }
-
+       ret = fn(&kiocb, iov, nr_segs, kiocb.ki_pos);
        if (ret == -EIOCBQUEUED)
                ret = wait_on_sync_kiocb(&kiocb);
        *ppos = kiocb.ki_pos;