dm crypt: tidy write loop pending

Move kcryptd_crypt_write_convert_loop inside kcryptd_crypt_write_convert.
This change is needed for a later patch.

No functional change.

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

1 files changed, 9 insertions, 16 deletions

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index cac064d4aa7..97b407582c0 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -691,7 +691,7 @@ static void kcryptd_crypt_write_io_submit(struct dm_crypt_io *io,
         }
 }
 
-static void kcryptd_crypt_write_convert_loop(struct dm_crypt_io *io)
+static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
 {
         struct crypt_config *cc = io->target->private;
         struct bio *clone;
@@ -699,6 +699,12 @@ static void kcryptd_crypt_write_convert_loop(struct dm_crypt_io *io)
         int r;
 
         /*
+         * Prevent io from disappearing until this function completes.
+         */
+        crypt_inc_pending(io);
+        crypt_convert_init(cc, &io->ctx, NULL, io->base_bio, io->sector);
+
+        /*
          * The allocated buffers can be smaller than the whole bio,
          * so repeat the whole process until all the data can be handled.
          */
@@ -706,7 +712,7 @@ static void kcryptd_crypt_write_convert_loop(struct dm_crypt_io *io)
                 clone = crypt_alloc_buffer(io, remaining);
                 if (unlikely(!clone)) {
                         io->error = -ENOMEM;
-                        return;
+                        break;
                 }
 
                 io->ctx.bio_out = clone;
@@ -720,7 +726,7 @@ static void kcryptd_crypt_write_convert_loop(struct dm_crypt_io *io)
                         /* processed, no running async crypto  */
                         kcryptd_crypt_write_io_submit(io, r, 0);
                         if (unlikely(r < 0))
-                                return;
+                                break;
                 } else
                         crypt_inc_pending(io);
 
@@ -732,19 +738,6 @@ static void kcryptd_crypt_write_convert_loop(struct dm_crypt_io *io)
                         congestion_wait(WRITE, HZ/100);
                 }
         }
-}
-
-static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
-{
-        struct crypt_config *cc = io->target->private;
-
-        /*
-         * Prevent io from disappearing until this function completes.
-         */
-        crypt_inc_pending(io);
-
-        crypt_convert_init(cc, &io->ctx, NULL, io->base_bio, io->sector);
-        kcryptd_crypt_write_convert_loop(io);
 
         crypt_dec_pending(io);
 }