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-rw-r--r--mm/shmem.c26
1 files changed, 9 insertions, 17 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index 5402481c28d1..f484c276e994 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1406,8 +1406,7 @@ shmem_write_end(struct file *file, struct address_space *mapping,
return copied;
}
-static ssize_t shmem_file_aio_read(struct kiocb *iocb,
- const struct iovec *iov, unsigned long nr_segs, loff_t pos)
+static ssize_t shmem_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *file = iocb->ki_filp;
struct inode *inode = file_inode(file);
@@ -1416,15 +1415,8 @@ static ssize_t shmem_file_aio_read(struct kiocb *iocb,
unsigned long offset;
enum sgp_type sgp = SGP_READ;
int error = 0;
- ssize_t retval;
- size_t count;
+ ssize_t retval = 0;
loff_t *ppos = &iocb->ki_pos;
- struct iov_iter iter;
-
- retval = generic_segment_checks(iov, &nr_segs, &count, VERIFY_WRITE);
- if (retval)
- return retval;
- iov_iter_init(&iter, iov, nr_segs, count, 0);
/*
* Might this read be for a stacking filesystem? Then when reading
@@ -1500,14 +1492,14 @@ static ssize_t shmem_file_aio_read(struct kiocb *iocb,
* Ok, we have the page, and it's up-to-date, so
* now we can copy it to user space...
*/
- ret = copy_page_to_iter(page, offset, nr, &iter);
+ ret = copy_page_to_iter(page, offset, nr, to);
retval += ret;
offset += ret;
index += offset >> PAGE_CACHE_SHIFT;
offset &= ~PAGE_CACHE_MASK;
page_cache_release(page);
- if (!iov_iter_count(&iter))
+ if (!iov_iter_count(to))
break;
if (ret < nr) {
error = -EFAULT;
@@ -2629,13 +2621,13 @@ static const struct file_operations shmem_file_operations = {
.mmap = shmem_mmap,
#ifdef CONFIG_TMPFS
.llseek = shmem_file_llseek,
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = shmem_file_aio_read,
- .aio_write = generic_file_aio_write,
+ .read = new_sync_read,
+ .write = new_sync_write,
+ .read_iter = shmem_file_read_iter,
+ .write_iter = generic_file_write_iter,
.fsync = noop_fsync,
.splice_read = shmem_file_splice_read,
- .splice_write = generic_file_splice_write,
+ .splice_write = iter_file_splice_write,
.fallocate = shmem_fallocate,
#endif
};