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xfs: fix missing KM_NOFS tags to keep lockdep happy
[firefly-linux-kernel-4.4.55.git]
/
fs
/
read_write.c
diff --git
a/fs/read_write.c
b/fs/read_write.c
index 605dbbcb19734363150668f2dd37e9a9fbf65276..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/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>
#include <linux/fsnotify.h>
#include <linux/security.h>
#include <linux/export.h>
@@
-16,12
+17,15
@@
#include <linux/pagemap.h>
#include <linux/splice.h>
#include <linux/compat.h>
#include <linux/pagemap.h>
#include <linux/splice.h>
#include <linux/compat.h>
-#include "read_write.h"
#include "internal.h"
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include "internal.h"
#include <asm/uaccess.h>
#include <asm/unistd.h>
+typedef ssize_t (*io_fn_t)(struct file *, char __user *, size_t, loff_t *);
+typedef ssize_t (*iov_fn_t)(struct kiocb *, const struct iovec *,
+ unsigned long, loff_t);
+
const struct file_operations generic_ro_fops = {
.llseek = generic_file_llseek,
.read = do_sync_read,
const struct file_operations generic_ro_fops = {
.llseek = generic_file_llseek,
.read = do_sync_read,
@@
-326,16
+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;
}
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 };
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 };
@@
-347,13
+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;
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;
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&kiocb);
*ppos = kiocb.ki_pos;
@@
-403,13
+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;
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;
if (-EIOCBQUEUED == ret)
ret = wait_on_sync_kiocb(&kiocb);
*ppos = kiocb.ki_pos;
@@
-589,13
+571,7
@@
static ssize_t do_sync_readv_writev(struct file *filp, const struct iovec *iov,
kiocb.ki_left = len;
kiocb.ki_nbytes = len;
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;
if (ret == -EIOCBQUEUED)
ret = wait_on_sync_kiocb(&kiocb);
*ppos = kiocb.ki_pos;