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Subject[PATCH 5/8] make aio_read()/aio_write() return int
Date
From: Al Viro <viro@zeniv.linux.org.uk>

that ssize_t is a rudiment of earlier calling conventions; it's been
used only to pass 0 and -E... since last autumn.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/aio.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/fs/aio.c b/fs/aio.c
index f47a29f7f201..f9e8f1edfe36 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1513,13 +1513,13 @@ static inline void aio_rw_done(struct kiocb *req, ssize_t ret)
}
}

-static ssize_t aio_read(struct kiocb *req, const struct iocb *iocb,
+static int aio_read(struct kiocb *req, const struct iocb *iocb,
bool vectored, bool compat)
{
struct iovec inline_vecs[UIO_FASTIOV], *iovec = inline_vecs;
struct iov_iter iter;
struct file *file;
- ssize_t ret;
+ int ret;

ret = aio_prep_rw(req, iocb);
if (ret)
@@ -1541,13 +1541,13 @@ static ssize_t aio_read(struct kiocb *req, const struct iocb *iocb,
return ret;
}

-static ssize_t aio_write(struct kiocb *req, const struct iocb *iocb,
+static int aio_write(struct kiocb *req, const struct iocb *iocb,
bool vectored, bool compat)
{
struct iovec inline_vecs[UIO_FASTIOV], *iovec = inline_vecs;
struct iov_iter iter;
struct file *file;
- ssize_t ret;
+ int ret;

ret = aio_prep_rw(req, iocb);
if (ret)
@@ -1713,7 +1713,7 @@ aio_poll_queue_proc(struct file *file, struct wait_queue_head *head,
add_wait_queue(head, &pt->iocb->poll.wait);
}

-static ssize_t aio_poll(struct aio_kiocb *aiocb, const struct iocb *iocb)
+static int aio_poll(struct aio_kiocb *aiocb, const struct iocb *iocb)
{
struct kioctx *ctx = aiocb->ki_ctx;
struct poll_iocb *req = &aiocb->poll;
@@ -1778,7 +1778,7 @@ static int __io_submit_one(struct kioctx *ctx, const struct iocb *iocb,
struct iocb __user *user_iocb, bool compat)
{
struct aio_kiocb *req;
- ssize_t ret;
+ int ret;

/* enforce forwards compatibility on users */
if (unlikely(iocb->aio_reserved2)) {
--
2.11.0
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