md: remove unnecessary arguments from ->reconfig method.

Passing the new layout and chunksize as args is not necessary as
the mddev has fields for new_check and new_layout.

This is preparation for combining the check_reshape and reconfig
methods

Signed-off-by: NeilBrown <neilb@suse.de>

diff --git a/drivers/md/faulty.c b/drivers/md/faulty.c
index 8695809..6513b7b 100644 (file)
--- a/drivers/md/faulty.c
+++ b/drivers/md/faulty.c
@@ -255,14 +255,14 @@ static void status(struct seq_file *seq, mddev_t *mddev)
 }
 
 
-static int reconfig(mddev_t *mddev, int layout, int chunk_size)
+static int reconfig(mddev_t *mddev)
 {
-       int mode = layout & ModeMask;
-       int count = layout >> ModeShift;
+       int mode = mddev->new_layout & ModeMask;
+       int count = mddev->new_layout >> ModeShift;
        conf_t *conf = mddev->private;
 
-       if (chunk_size != -1)
-               return -EINVAL;
+       if (mddev->new_layout < 0)
+               return 0;
 
        /* new layout */
        if (mode == ClearFaults)
@@ -279,6 +279,7 @@ static int reconfig(mddev_t *mddev, int layout, int chunk_size)
                atomic_set(&conf->counters[mode], count);
        } else
                return -EINVAL;
+       mddev->new_layout = -1;
        mddev->layout = -1; /* makes sure further changes come through */
        return 0;
 }
@@ -315,7 +316,7 @@ static int run(mddev_t *mddev)
        md_set_array_sectors(mddev, faulty_size(mddev, 0, 0));
        mddev->private = conf;
 
-       reconfig(mddev, mddev->layout, -1);
+       reconfig(mddev);
 
        return 0;
 }

diff --git a/drivers/md/md.c b/drivers/md/md.c
index f996d83..5caa421 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2809,9 +2809,12 @@ layout_store(mddev_t *mddev, const char *buf, size_t len)
                int err;
                if (mddev->pers->reconfig == NULL)
                        return -EBUSY;
-               err = mddev->pers->reconfig(mddev, n, -1);
-               if (err)
+               mddev->new_layout = n;
+               err = mddev->pers->reconfig(mddev);
+               if (err) {
+                       mddev->new_layout = mddev->layout;
                        return err;
+               }
        } else {
                mddev->new_layout = n;
                if (mddev->reshape_position == MaxSector)
@@ -2884,9 +2887,12 @@ chunk_size_store(mddev_t *mddev, const char *buf, size_t len)
                int err;
                if (mddev->pers->reconfig == NULL)
                        return -EBUSY;
-               err = mddev->pers->reconfig(mddev, -1, n);
-               if (err)
+               mddev->new_chunk_sectors = n >> 9;
+               err = mddev->pers->reconfig(mddev);
+               if (err) {
+                       mddev->new_chunk_sectors = mddev->chunk_sectors;
                        return err;
+               }
        } else {
                mddev->new_chunk_sectors = n >> 9;
                if (mddev->reshape_position == MaxSector)
@@ -5220,8 +5226,13 @@ static int update_array_info(mddev_t *mddev, mdu_array_info_t *info)
                 */
                if (mddev->pers->reconfig == NULL)
                        return -EINVAL;
-               else
-                       return mddev->pers->reconfig(mddev, info->layout, -1);
+               else {
+                       mddev->new_layout = info->layout;
+                       rv = mddev->pers->reconfig(mddev);
+                       if (rv)
+                               mddev->new_layout = mddev->layout;
+                       return rv;
+               }
        }
        if (info->size >= 0 && mddev->dev_sectors / 2 != info->size)
                rv = update_size(mddev, (sector_t)info->size * 2);

diff --git a/drivers/md/md.h b/drivers/md/md.h
index e0a2b8e..815013f 100644 (file)
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -326,7 +326,7 @@ struct mdk_personality
        int (*check_reshape) (mddev_t *mddev);
        int (*start_reshape) (mddev_t *mddev);
        void (*finish_reshape) (mddev_t *mddev);
-       int (*reconfig) (mddev_t *mddev, int layout, int chunk_size);
+       int (*reconfig) (mddev_t *mddev);
        /* quiesce moves between quiescence states
         * 0 - fully active
         * 1 - no new requests allowed

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index b84766e..136051b 100644 (file)
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5165,7 +5165,7 @@ static void *raid5_takeover_raid6(mddev_t *mddev)
 }
 
 
-static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
+static int raid5_reconfig(mddev_t *mddev)
 {
        /* For a 2-drive array, the layout and chunk size can be changed
         * immediately as not restriping is needed.
@@ -5173,15 +5173,16 @@ static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
         * to be used by a reshape pass.
         */
        raid5_conf_t *conf = mddev->private;
+       int new_chunk = mddev->new_chunk_sectors;
 
-       if (new_layout >= 0 && !algorithm_valid_raid5(new_layout))
+       if (mddev->new_layout >= 0 && !algorithm_valid_raid5(mddev->new_layout))
                return -EINVAL;
        if (new_chunk > 0) {
                if (!is_power_of_2(new_chunk))
                        return -EINVAL;
-               if (new_chunk < PAGE_SIZE)
+               if (new_chunk < (PAGE_SIZE>>9))
                        return -EINVAL;
-               if (mddev->array_sectors & ((new_chunk>>9)-1))
+               if (mddev->array_sectors & (new_chunk-1))
                        /* not factor of array size */
                        return -EINVAL;
        }
@@ -5189,48 +5190,37 @@ static int raid5_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
        /* They look valid */
 
        if (mddev->raid_disks == 2) {
-
-               if (new_layout >= 0) {
-                       conf->algorithm = new_layout;
-                       mddev->layout = mddev->new_layout = new_layout;
+               /* can make the change immediately */
+               if (mddev->new_layout >= 0) {
+                       conf->algorithm = mddev->new_layout;
+                       mddev->layout = mddev->new_layout;
                }
                if (new_chunk > 0) {
-                       conf->chunk_sectors = new_chunk >> 9;
-                       mddev->new_chunk_sectors = new_chunk >> 9;
-                       mddev->chunk_sectors = new_chunk >> 9;
+                       conf->chunk_sectors = new_chunk ;
+                       mddev->chunk_sectors = new_chunk;
                }
                set_bit(MD_CHANGE_DEVS, &mddev->flags);
                md_wakeup_thread(mddev->thread);
-       } else {
-               if (new_layout >= 0)
-                       mddev->new_layout = new_layout;
-               if (new_chunk > 0)
-                       mddev->new_chunk_sectors = new_chunk >> 9;
        }
        return 0;
 }
 
-static int raid6_reconfig(mddev_t *mddev, int new_layout, int new_chunk)
+static int raid6_reconfig(mddev_t *mddev)
 {
-       if (new_layout >= 0 && !algorithm_valid_raid6(new_layout))
+       int new_chunk = mddev->new_chunk_sectors;
+       if (mddev->new_layout >= 0 && !algorithm_valid_raid6(mddev->new_layout))
                return -EINVAL;
        if (new_chunk > 0) {
                if (!is_power_of_2(new_chunk))
                        return -EINVAL;
-               if (new_chunk < PAGE_SIZE)
+               if (new_chunk < (PAGE_SIZE >> 9))
                        return -EINVAL;
-               if (mddev->array_sectors & ((new_chunk>>9)-1))
+               if (mddev->array_sectors & (new_chunk-1))
                        /* not factor of array size */
                        return -EINVAL;
        }
 
        /* They look valid */
-
-       if (new_layout >= 0)
-               mddev->new_layout = new_layout;
-       if (new_chunk > 0)
-               mddev->new_chunk_sectors = new_chunk >> 9;
-
        return 0;
 }