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authorAl Viro <viro@zeniv.linux.org.uk>2015-04-01 20:17:51 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2015-04-11 22:28:25 -0400
commit070b3656cf228eaaef7b28b59264c5c7cdbdd0fb (patch)
tree76040fdba3e0703df0be897aba7310332454d60e /fs/9p/vfs_file.c
parent4f3b35c157e43107cc7e1f1aa06694e8b22e10bb (diff)
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>
Diffstat (limited to 'fs/9p/vfs_file.c')
-rw-r--r--fs/9p/vfs_file.c24
1 files changed, 9 insertions, 15 deletions
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index b40133796b87..75a2bb01420d 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -36,6 +36,7 @@
#include <linux/utsname.h>
#include <asm/uaccess.h>
#include <linux/idr.h>
+#include <linux/uio.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
@@ -457,24 +458,20 @@ v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid,
const char __user *data, size_t count,
loff_t *offset, int invalidate)
{
- int n;
- loff_t i_size;
- size_t total = 0;
loff_t origin = *offset;
- unsigned long pg_start, pg_end;
+ struct iovec iov = {.iov_base = (void __user *)data, .iov_len = count};
+ struct iov_iter from;
+ int total, err = 0;
p9_debug(P9_DEBUG_VFS, "data %p count %d offset %x\n",
data, (int)count, (int)*offset);
- do {
- n = p9_client_write(fid, NULL, data+total, origin+total, count);
- if (n <= 0)
- break;
- count -= n;
- total += n;
- } while (count > 0);
+ iov_iter_init(&from, WRITE, &iov, 1, count);
+ total = p9_client_write(fid, origin, &from, &err);
if (invalidate && (total > 0)) {
+ loff_t i_size;
+ unsigned long pg_start, pg_end;
pg_start = origin >> PAGE_CACHE_SHIFT;
pg_end = (origin + total - 1) >> PAGE_CACHE_SHIFT;
if (inode->i_mapping && inode->i_mapping->nrpages)
@@ -487,10 +484,7 @@ v9fs_file_write_internal(struct inode *inode, struct p9_fid *fid,
i_size_write(inode, *offset);
}
}
- if (n < 0)
- return n;
-
- return total;
+ return total ? total : err;
}
/**