dm: initialise tio in alloc_tio

Move repeated dm_target_io initialisation inside alloc_tio().

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

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index badb751..edf9f24 100644 (file)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -391,11 +391,6 @@ static void free_io(struct mapped_device *md, struct dm_io *io)
        mempool_free(io, md->io_pool);
 }
 
-static struct dm_target_io *alloc_tio(struct mapped_device *md)
-{
-       return mempool_alloc(md->tio_pool, GFP_NOIO);
-}
-
 static void free_tio(struct mapped_device *md, struct dm_target_io *tio)
 {
        mempool_free(tio, md->tio_pool);
@@ -750,16 +745,24 @@ static struct bio *clone_bio(struct bio *bio, sector_t sector,
        return clone;
 }
 
-static void __flush_target(struct clone_info *ci, struct dm_target *ti,
-                         unsigned flush_nr)
+static struct dm_target_io *alloc_tio(struct clone_info *ci,
+                                     struct dm_target *ti)
 {
-       struct dm_target_io *tio = alloc_tio(ci->md);
-       struct bio *clone;
+       struct dm_target_io *tio = mempool_alloc(ci->md->tio_pool, GFP_NOIO);
 
        tio->io = ci->io;
        tio->ti = ti;
-
        memset(&tio->info, 0, sizeof(tio->info));
+
+       return tio;
+}
+
+static void __flush_target(struct clone_info *ci, struct dm_target *ti,
+                         unsigned flush_nr)
+{
+       struct dm_target_io *tio = alloc_tio(ci, ti);
+       struct bio *clone;
+
        tio->info.flush_request = flush_nr;
 
        clone = bio_alloc_bioset(GFP_NOIO, 0, ci->md->bs);
@@ -803,10 +806,7 @@ static int __clone_and_map(struct clone_info *ci)
        /*
         * Allocate a target io object.
         */
-       tio = alloc_tio(ci->md);
-       tio->io = ci->io;
-       tio->ti = ti;
-       memset(&tio->info, 0, sizeof(tio->info));
+       tio = alloc_tio(ci, ti);
 
        if (ci->sector_count <= max) {
                /*
@@ -862,10 +862,7 @@ static int __clone_and_map(struct clone_info *ci)
 
                                max = max_io_len(ci->md, ci->sector, ti);
 
-                               tio = alloc_tio(ci->md);
-                               tio->io = ci->io;
-                               tio->ti = ti;
-                               memset(&tio->info, 0, sizeof(tio->info));
+                               tio = alloc_tio(ci, ti);
                        }
 
                        len = min(remaining, max);