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afs: Fix server->active leak in afs_put_server

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The atomic_read was accidentally replaced with atomic_inc_return,
which prevents the server from getting cleaned up and causes rmmod
to hang with a warning:

    Can't purge s=00000001

Fixes: 2757a4dc18 ("afs: Fix access after dec in put functions")
Signed-off-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20221130174053.2665818-1-marc.dionne@auristor.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Marc Dionne 2022-11-30 17:55:51 +00:00 committed by Linus Torvalds
parent 04aa64375f
commit ef4d3ea405
1 changed files with 1 additions and 1 deletions
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2
fs/afs/server.c
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@ -406,7 +406,7 @@ void afs_put_server(struct afs_net *net, struct afs_server *server,
if (!server)
return;
a = atomic_inc_return(&server->active);
a = atomic_read(&server->active);
zero = __refcount_dec_and_test(&server->ref, &r);
trace_afs_server(debug_id, r - 1, a, reason);
if (unlikely(zero))