cpufreq: drivers: don't check range of target freq in .target()

[mirror_ubuntu-bionic-kernel.git] / fs / read_write.c

diff --git a/fs/read_write.c b/fs/read_write.c
index 3ae6dbe828bf9d1e3573e6e99730b681564c195d..e6ddc8dceb96fc48a8fbe379799d0efed52d2b4a 100644 (file)
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -15,7 +15,9 @@
 #include <linux/syscalls.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>
@@ -247,6 +249,13 @@ SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence)
        return retval;
 }
 
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE3(lseek, unsigned int, fd, compat_off_t, offset, unsigned int, whence)
+{
+       return sys_lseek(fd, offset, whence);
+}
+#endif
+
 #ifdef __ARCH_WANT_SYS_LLSEEK
 SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high,
                unsigned long, offset_low, loff_t __user *, result,
@@ -278,7 +287,6 @@ out_putf:
 }
 #endif
 
-
 /*
  * rw_verify_area doesn't like huge counts. We limit
  * them to something that fits in "int" so that others
@@ -410,6 +418,33 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof
 
 EXPORT_SYMBOL(do_sync_write);
 
+ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t *pos)
+{
+       mm_segment_t old_fs;
+       const char __user *p;
+       ssize_t ret;
+
+       if (!file->f_op || (!file->f_op->write && !file->f_op->aio_write))
+               return -EINVAL;
+
+       old_fs = get_fs();
+       set_fs(get_ds());
+       p = (__force const char __user *)buf;
+       if (count > MAX_RW_COUNT)
+               count =  MAX_RW_COUNT;
+       if (file->f_op->write)
+               ret = file->f_op->write(file, p, count, pos);
+       else
+               ret = do_sync_write(file, p, count, pos);
+       set_fs(old_fs);
+       if (ret > 0) {
+               fsnotify_modify(file);
+               add_wchar(current, ret);
+       }
+       inc_syscw(current);
+       return ret;
+}
+
 ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_t *pos)
 {
        ssize_t ret;