afs: Handle a short write to an AFS page
Handle the situation where afs_write_begin() is told to expect that a
full-page write will be made, but this doesn't happen (EFAULT, CTRL-C,
etc.), and so afs_write_end() sees a partial write took place. Currently,
no attempt is to deal with the discrepency.
Fix this by loading the gap from the server.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 7784a8b..dc2cb48 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -130,7 +130,7 @@ struct afs_call_type {
*/
struct afs_read {
loff_t pos; /* Where to start reading */
- loff_t len; /* How much to read */
+ loff_t len; /* How much we're asking for */
loff_t actual_len; /* How much we're actually getting */
atomic_t usage;
unsigned int remain; /* Amount remaining */