9p: switch p9_client_write() to passing it struct iov_iter *
... and make it loop until it's done
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/9p/xattr.c b/fs/9p/xattr.c
index f95e01e..d4cab07 100644
--- a/fs/9p/xattr.c
+++ b/fs/9p/xattr.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/sched.h>
+#include <linux/uio.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@@ -120,8 +121,11 @@
int v9fs_fid_xattr_set(struct p9_fid *fid, const char *name,
const void *value, size_t value_len, int flags)
{
- u64 offset = 0;
- int retval, msize, write_count;
+ struct kvec kvec = {.iov_base = (void *)value, .iov_len = value_len};
+ struct iov_iter from;
+ int retval;
+
+ iov_iter_kvec(&from, WRITE | ITER_KVEC, &kvec, 1, value_len);
p9_debug(P9_DEBUG_VFS, "name = %s value_len = %zu flags = %d\n",
name, value_len, flags);
@@ -135,29 +139,11 @@
* On success fid points to xattr
*/
retval = p9_client_xattrcreate(fid, name, value_len, flags);
- if (retval < 0) {
+ if (retval < 0)
p9_debug(P9_DEBUG_VFS, "p9_client_xattrcreate failed %d\n",
retval);
- goto err;
- }
- msize = fid->clnt->msize;
- while (value_len) {
- if (value_len > (msize - P9_IOHDRSZ))
- write_count = msize - P9_IOHDRSZ;
- else
- write_count = value_len;
- write_count = p9_client_write(fid, ((char *)value)+offset,
- NULL, offset, write_count);
- if (write_count < 0) {
- /* error in xattr write */
- retval = write_count;
- goto err;
- }
- offset += write_count;
- value_len -= write_count;
- }
- retval = 0;
-err:
+ else
+ p9_client_write(fid, 0, &from, &retval);
p9_client_clunk(fid);
return retval;
}