afs: Need to clear responded flag in addr cursor

Web:        https://git.kernel.org/torvalds/c/8305e579c653b127b292fcdce551e930f9560260
Commit:     8305e579c653b127b292fcdce551e930f9560260
Parent:     fe4d774c847398c2a45c10a780ccfde069840793
Refname:    refs/heads/master
Author:     David Howells <[email protected]>
AuthorDate: Tue Feb 6 06:26:30 2018 +0000
Committer:  David Howells <[email protected]>
CommitDate: Tue Feb 6 14:36:54 2018 +0000

    afs: Need to clear responded flag in addr cursor
    
    In afs_select_fileserver(), we need to clear the ->responded flag in the
    address list when reusing it.  We should also clear it in
    afs_select_current_fileserver().
    
    To this end, just memset() the object before initialising it.
    
    Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation")
    Signed-off-by: David Howells <[email protected]>
    cc: [email protected]
---
 fs/afs/rotate.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/fs/afs/rotate.c b/fs/afs/rotate.c
index b473b25c6978..892a4904fd77 100644
--- a/fs/afs/rotate.c
+++ b/fs/afs/rotate.c
@@ -384,6 +384,7 @@ use_server:
 	afs_get_addrlist(alist);
 	read_unlock(&server->fs_lock);
 
+	memset(&fc->ac, 0, sizeof(fc->ac));
 
 	/* Probe the current fileserver if we haven't done so yet. */
 	if (!test_bit(AFS_SERVER_FL_PROBED, &server->flags)) {
@@ -398,11 +399,8 @@ use_server:
 	else
 		afs_put_addrlist(alist);
 
-	fc->ac.addr  = NULL;
 	fc->ac.start = READ_ONCE(alist->index);
 	fc->ac.index = fc->ac.start;
-	fc->ac.error = 0;
-	fc->ac.begun = false;
 	goto iterate_address;
 
 iterate_address:
@@ -458,12 +456,10 @@ bool afs_select_current_fileserver(struct afs_fs_cursor *fc)
 			return false;
 		}
 
+		memset(&fc->ac, 0, sizeof(fc->ac));
 		fc->ac.alist = alist;
-		fc->ac.addr  = NULL;
 		fc->ac.start = READ_ONCE(alist->index);
 		fc->ac.index = fc->ac.start;
-		fc->ac.error = 0;
-		fc->ac.begun = false;
 		goto iterate_address;
 
 	case 0:
--
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