Signed-off-by: Pavel Shilovsky <[email protected]>
---
fs/cifs/file.c | 75 +++++++++++++++++++++++++++++++++-----------------------
1 file changed, 44 insertions(+), 31 deletions(-)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 89d647b..887c18c 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2470,41 +2470,19 @@ wdata_fill_from_iovec(struct cifs_writedata *wdata,
struct iov_iter *it,
return rc;
}
-static ssize_t
-cifs_iovec_write(struct file *file, const struct iovec *iov,
- unsigned long nr_segs, loff_t *poffset)
+static int
+cifs_write_from_iovec(loff_t offset, size_t len, const struct iovec *iov,
+ unsigned long nr_segs, struct cifsFileInfo *open_file,
+ struct cifs_sb_info *cifs_sb,
+ struct list_head *wdata_list)
{
+ int rc = 0;
+ size_t cur_len;
unsigned long nr_pages, i;
- size_t len, cur_len;
- ssize_t total_written = 0;
- loff_t offset;
+ struct cifs_writedata *wdata;
struct iov_iter it;
- struct cifsFileInfo *open_file;
- struct cifs_tcon *tcon;
- struct cifs_sb_info *cifs_sb;
- struct cifs_writedata *wdata, *tmp;
- struct list_head wdata_list;
- int rc;
pid_t pid;
- len = iov_length(iov, nr_segs);
- if (!len)
- return 0;
-
- rc = generic_write_checks(file, poffset, &len, 0);
- if (rc)
- return rc;
-
- INIT_LIST_HEAD(&wdata_list);
- cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
- open_file = file->private_data;
- tcon = tlink_tcon(open_file->tlink);
-
- if (!tcon->ses->server->ops->async_writev)
- return -ENOSYS;
-
- offset = *poffset;
-
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD)
pid = open_file->pid;
else
@@ -2549,11 +2527,46 @@ cifs_iovec_write(struct file *file, const struct iovec
*iov,
break;
}
- list_add_tail(&wdata->list, &wdata_list);
+ list_add_tail(&wdata->list, wdata_list);
offset += cur_len;
len -= cur_len;
} while (len > 0);
+ return rc;
+}
+
+static ssize_t
+cifs_iovec_write(struct file *file, const struct iovec *iov,
+ unsigned long nr_segs, loff_t *poffset)
+{
+ size_t len;
+ ssize_t total_written = 0;
+ struct cifsFileInfo *open_file;
+ struct cifs_tcon *tcon;
+ struct cifs_sb_info *cifs_sb;
+ struct cifs_writedata *wdata, *tmp;
+ struct list_head wdata_list;
+ int rc;
+
+ len = iov_length(iov, nr_segs);
+ if (!len)
+ return 0;
+
+ rc = generic_write_checks(file, poffset, &len, 0);
+ if (rc)
+ return rc;
+
+ INIT_LIST_HEAD(&wdata_list);
+ cifs_sb = CIFS_SB(file->f_path.dentry->d_sb);
+ open_file = file->private_data;
+ tcon = tlink_tcon(open_file->tlink);
+
+ if (!tcon->ses->server->ops->async_writev)
+ return -ENOSYS;
+
+ rc = cifs_write_from_iovec(*poffset, len, iov, nr_segs, open_file,
+ cifs_sb, &wdata_list);
+
/*
* If at least one write was successfully sent, then discard any rc
* value from the later writes. If the other write succeeds, then
--
1.7.10.4
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