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authorAl Viro <viro@zeniv.linux.org.uk>2015-04-06 22:44:11 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2015-04-11 22:29:47 -0400
commite9d1593d4e9311bca040ecf6ec7599e6f235140c (patch)
tree689e560feb0b69c5bcc5c87a97794101ef03a4d5
parentccca26835dc27f7ba54e09d7aa03f462684a1927 (diff)
downloadlinux-e9d1593d4e9311bca040ecf6ec7599e6f235140c.tar.gz
cifs: fold cifs_iovec_write() into the only caller
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/cifs/file.c47
1 files changed, 16 insertions, 31 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 72394c5abd0f..3cb04129ddb1 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2560,9 +2560,9 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from,
return rc;
}
-static ssize_t
-cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset)
+ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from)
{
+ struct file *file = iocb->ki_filp;
size_t len;
ssize_t total_written = 0;
struct cifsFileInfo *open_file;
@@ -2573,8 +2573,14 @@ cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset)
struct iov_iter saved_from;
int rc;
+ /*
+ * BB - optimize the way when signing is disabled. We can drop this
+ * extra memory-to-memory copying and use iovec buffers for constructing
+ * write request.
+ */
+
len = iov_iter_count(from);
- rc = generic_write_checks(file, poffset, &len, 0);
+ rc = generic_write_checks(file, &iocb->ki_pos, &len, 0);
if (rc)
return rc;
@@ -2593,7 +2599,7 @@ cifs_iovec_write(struct file *file, struct iov_iter *from, loff_t *poffset)
memcpy(&saved_from, from, sizeof(struct iov_iter));
- rc = cifs_write_from_iter(*poffset, len, from, open_file, cifs_sb,
+ rc = cifs_write_from_iter(iocb->ki_pos, len, from, open_file, cifs_sb,
&wdata_list);
/*
@@ -2633,7 +2639,7 @@ restart_loop:
memcpy(&tmp_from, &saved_from,
sizeof(struct iov_iter));
iov_iter_advance(&tmp_from,
- wdata->offset - *poffset);
+ wdata->offset - iocb->ki_pos);
rc = cifs_write_from_iter(wdata->offset,
wdata->bytes, &tmp_from,
@@ -2650,34 +2656,13 @@ restart_loop:
kref_put(&wdata->refcount, cifs_uncached_writedata_release);
}
- if (total_written > 0)
- *poffset += total_written;
+ if (unlikely(!total_written))
+ return rc;
+ iocb->ki_pos += total_written;
+ set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(file_inode(file))->flags);
cifs_stats_bytes_written(tcon, total_written);
- return total_written ? total_written : (ssize_t)rc;
-}
-
-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);
-
- /*
- * BB - optimize the way when signing is disabled. We can drop this
- * extra memory-to-memory copying and use iovec buffers for constructing
- * write request.
- */
-
- written = cifs_iovec_write(iocb->ki_filp, from, &pos);
- if (written > 0) {
- set_bit(CIFS_INO_INVALID_MAPPING, &CIFS_I(inode)->flags);
- iocb->ki_pos = pos;
- }
-
- return written;
+ return total_written;
}
static ssize_t