dm raid: change rs_set_dev_and_array_sectors API and callers

Add a size argument to rs_set_dev_and_array_sectors as prerequisite
to fixing grown device resynchronization not occuring when new MD
bitmap pages have to be allocated as a result of the extension in
a follwup patch.

Also avoid code duplication by using rs_set_rdev_sectors
in the aforementioned function.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index b0aa595..89f805e 100644 (file)
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -1615,13 +1615,12 @@ static int _check_data_dev_sectors(struct raid_set *rs)
 }
 
 /* Calculate the sectors per device and per array used for @rs */
-static int rs_set_dev_and_array_sectors(struct raid_set *rs, bool use_mddev)
+static int rs_set_dev_and_array_sectors(struct raid_set *rs, sector_t sectors, bool use_mddev)
 {
        int delta_disks;
        unsigned int data_stripes;
+       sector_t array_sectors = sectors, dev_sectors = sectors;
        struct mddev *mddev = &rs->md;
-       struct md_rdev *rdev;
-       sector_t array_sectors = rs->ti->len, dev_sectors = rs->ti->len;
 
        if (use_mddev) {
                delta_disks = mddev->delta_disks;
@@ -1656,12 +1655,9 @@ static int rs_set_dev_and_array_sectors(struct raid_set *rs, bool use_mddev)
                /* Striped layouts */
                array_sectors = (data_stripes + delta_disks) * dev_sectors;
 
-       rdev_for_each(rdev, mddev)
-               if (!test_bit(Journal, &rdev->flags))
-                       rdev->sectors = dev_sectors;
-
        mddev->array_sectors = array_sectors;
        mddev->dev_sectors = dev_sectors;
+       rs_set_rdev_sectors(rs);
 
        return _check_data_dev_sectors(rs);
 bad:
@@ -2911,7 +2907,7 @@ static int rs_setup_reshape(struct raid_set *rs)
 
        /* Remove disk(s) */
        } else if (rs->delta_disks < 0) {
-               r = rs_set_dev_and_array_sectors(rs, true);
+               r = rs_set_dev_and_array_sectors(rs, rs->ti->len, true);
                mddev->reshape_backwards = 1; /* removing disk(s) -> backward reshape */
 
        /* Change layout and/or chunk size */
@@ -3067,7 +3063,7 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
         *
         * Any existing superblock will overwrite the array and device sizes
         */
-       r = rs_set_dev_and_array_sectors(rs, false);
+       r = rs_set_dev_and_array_sectors(rs, rs->ti->len, false);
        if (r)
                goto bad;