dm crypt: remove inc_pending from write_io_submit

Make the caller reponsible for incrementing the pending count before calling
kcryptd_crypt_write_io_submit() in the non-async case to bring it into line
with the async case.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 97b4075..0042636 100644 (file)
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -685,10 +685,8 @@ static void kcryptd_crypt_write_io_submit(struct dm_crypt_io *io,
 
        if (async)
                kcryptd_queue_io(io);
-       else {
-               crypt_inc_pending(io);
+       else
                generic_make_request(clone);
-       }
 }
 
 static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
@@ -724,9 +722,12 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
 
                if (atomic_dec_and_test(&io->ctx.pending)) {
                        /* processed, no running async crypto  */
+                       crypt_inc_pending(io);
                        kcryptd_crypt_write_io_submit(io, r, 0);
-                       if (unlikely(r < 0))
+                       if (unlikely(r < 0)) {
+                               crypt_dec_pending(io);
                                break;
+                       }
                } else
                        crypt_inc_pending(io);