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fs: fix kernel_write prototype

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Make the position an in/out argument like all the other read/write
helpers and and make the buf argument a void pointer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2017-09-01 17:39:14 +02:00
committed by Al Viro
parent bdd1d2d3d2
commit e13ec939e9
9 changed files with 19 additions and 13 deletions
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6
fs/read_write.c
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@@ -512,8 +512,8 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t
}
EXPORT_SYMBOL(__kernel_write);
ssize_t kernel_write(struct file *file, const char *buf, size_t count,
loff_t pos)
ssize_t kernel_write(struct file *file, const void *buf, size_t count,
loff_t *pos)
{
mm_segment_t old_fs;
ssize_t res;
@@ -521,7 +521,7 @@ ssize_t kernel_write(struct file *file, const char *buf, size_t count,
old_fs = get_fs();
set_fs(get_ds());
/* The cast to a user pointer is valid due to the set_fs() */
res = vfs_write(file, (__force const char __user *)buf, count, &pos);
res = vfs_write(file, (__force const char __user *)buf, count, pos);
set_fs(old_fs);
return res;