cifs: switch to ->write_iter()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 2ec7fce..60e9b5f 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2385,14 +2385,12 @@
}
static ssize_t
-cifs_iovec_write(struct file *file, const struct iovec *iov,
- unsigned long nr_segs, loff_t *poffset)
+cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset)
{
unsigned long nr_pages, i;
size_t bytes, copied, len, cur_len;
ssize_t total_written = 0;
loff_t offset;
- struct iov_iter it;
struct cifsFileInfo *open_file;
struct cifs_tcon *tcon;
struct cifs_sb_info *cifs_sb;
@@ -2401,14 +2399,16 @@
int rc;
pid_t pid;
- len = iov_length(iov, nr_segs);
- if (!len)
- return 0;
-
+ len = iov_iter_count(from);
rc = generic_write_checks(file, poffset, &len, 0);
if (rc)
return rc;
+ if (!len)
+ return 0;
+
+ iov_iter_truncate(from, len);
+
INIT_LIST_HEAD(&wdata_list);
cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
open_file = file->private_data;
@@ -2424,7 +2424,6 @@
else
pid = current->tgid;
- iov_iter_init(&it, WRITE, iov, nr_segs, len);
do {
size_t save_len;
@@ -2446,7 +2445,7 @@
for (i = 0; i < nr_pages; i++) {
bytes = min_t(size_t, cur_len, PAGE_SIZE);
copied = copy_page_from_iter(wdata->pages[i], 0, bytes,
- &it);
+ from);
cur_len -= copied;
/*
* If we didn't copy as much as we expected, then that
@@ -2545,11 +2544,11 @@
return total_written ? total_written : (ssize_t)rc;
}
-ssize_t cifs_user_writev(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from)
{
ssize_t written;
struct inode *inode;
+ loff_t pos = iocb->ki_pos;
inode = file_inode(iocb->ki_filp);
@@ -2559,7 +2558,7 @@
* write request.
*/
- written = cifs_iovec_write(iocb->ki_filp, iov, nr_segs, &pos);
+ written = cifs_iovec_write(iocb->ki_filp, from, &pos);
if (written > 0) {
CIFS_I(inode)->invalid_mapping = true;
iocb->ki_pos = pos;
@@ -2569,8 +2568,7 @@
}
static ssize_t
-cifs_writev(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+cifs_writev(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
struct cifsFileInfo *cfile = (struct cifsFileInfo *)file->private_data;
@@ -2588,10 +2586,10 @@
mutex_lock(&inode->i_mutex);
if (file->f_flags & O_APPEND)
lock_pos = i_size_read(inode);
- if (!cifs_find_lock_conflict(cfile, lock_pos, iov_length(iov, nr_segs),
+ if (!cifs_find_lock_conflict(cfile, lock_pos, iov_iter_count(from),
server->vals->exclusive_lock_type, NULL,
CIFS_WRITE_OP)) {
- rc = __generic_file_aio_write(iocb, iov, nr_segs);
+ rc = __generic_file_write_iter(iocb, from);
mutex_unlock(&inode->i_mutex);
if (rc > 0) {
@@ -2609,8 +2607,7 @@
}
ssize_t
-cifs_strict_writev(struct kiocb *iocb, const struct iovec *iov,
- unsigned long nr_segs, loff_t pos)
+cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from)
{
struct inode *inode = file_inode(iocb->ki_filp);
struct cifsInodeInfo *cinode = CIFS_I(inode);
@@ -2628,11 +2625,10 @@
if (cap_unix(tcon->ses) &&
(CIFS_UNIX_FCNTL_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability))
&& ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOPOSIXBRL) == 0)) {
- written = generic_file_aio_write(
- iocb, iov, nr_segs, pos);
+ written = generic_file_write_iter(iocb, from);
goto out;
}
- written = cifs_writev(iocb, iov, nr_segs, pos);
+ written = cifs_writev(iocb, from);
goto out;
}
/*
@@ -2641,7 +2637,7 @@
* affected pages because it may cause a error with mandatory locks on
* these pages but not on the region from pos to ppos+len-1.
*/
- written = cifs_user_writev(iocb, iov, nr_segs, pos);
+ written = cifs_user_writev(iocb, from);
if (written > 0 && CIFS_CACHE_READ(cinode)) {
/*
* Windows 7 server can delay breaking level2 oplock if a write