From 84c3d55cc474f9c234c023c92e2769f940d5548c Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 3 Apr 2014 14:33:23 -0400
Subject: [PATCH] fuse: switch to ->write_iter()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/fuse/file.c | 27 +++++++++++----------------
1 file changed, 11 insertions(+), 16 deletions(-)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a25fa9059faa8..7fbc803cf51d7 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1182,18 +1182,17 @@ static ssize_t fuse_perform_write(struct file *file,
return res > 0 ? res : err;
}
-static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
struct address_space *mapping = file->f_mapping;
- size_t count;
+ size_t count = iov_iter_count(from);
ssize_t written = 0;
ssize_t written_buffered = 0;
struct inode *inode = mapping->host;
ssize_t err;
- struct iov_iter i;
loff_t endbyte = 0;
+ loff_t pos = iocb->ki_pos;
if (get_fuse_conn(inode)->writeback_cache) {
/* Update size (EOF optimization) and mode (SUID clearing) */
@@ -1201,13 +1200,9 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
if (err)
return err;
- return generic_file_aio_write(iocb, iov, nr_segs, pos);
+ return generic_file_write_iter(iocb, from);
}
- WARN_ON(iocb->ki_pos != pos);
-
- count = iov_length(iov, nr_segs);
- iov_iter_init(&i, WRITE, iov, nr_segs, count);
mutex_lock(&inode->i_mutex);
/* We can write back this queue in page reclaim */
@@ -1220,7 +1215,7 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
if (count == 0)
goto out;
- iov_iter_truncate(&i, count);
+ iov_iter_truncate(from, count);
err = file_remove_suid(file);
if (err)
goto out;
@@ -1230,13 +1225,13 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
goto out;
if (file->f_flags & O_DIRECT) {
- written = generic_file_direct_write(iocb, &i, pos);
- if (written < 0 || !iov_iter_count(&i))
+ written = generic_file_direct_write(iocb, from, pos);
+ if (written < 0 || !iov_iter_count(from))
goto out;
pos += written;
- written_buffered = fuse_perform_write(file, mapping, &i, pos);
+ written_buffered = fuse_perform_write(file, mapping, from, pos);
if (written_buffered < 0) {
err = written_buffered;
goto out;
@@ -1255,7 +1250,7 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
written += written_buffered;
iocb->ki_pos = pos + written_buffered;
} else {
- written = fuse_perform_write(file, mapping, &i, pos);
+ written = fuse_perform_write(file, mapping, from, pos);
if (written >= 0)
iocb->ki_pos = pos + written;
}
@@ -3039,8 +3034,8 @@ static const struct file_operations fuse_file_operations = {
.llseek = fuse_file_llseek,
.read = new_sync_read,
.read_iter = fuse_file_read_iter,
- .write = do_sync_write,
- .aio_write = fuse_file_aio_write,
+ .write = new_sync_write,
+ .write_iter = fuse_file_write_iter,
.mmap = fuse_file_mmap,
.open = fuse_open,
.flush = fuse_flush,
--
2.39.5