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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: d2ddc776a4 ("afs: Overhaul volume and server record caching and fileserver rotation")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: stable@vger.kernel.org
This commit is contained in:
David Howells 2018-02-06 06:26:30 +00:00
parent fe4d774c84
commit 8305e579c6
1 changed files with 2 additions and 6 deletions
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8
fs/afs/rotate.c
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@ -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: