From 99f92a7c1eba4e3aa82b361bbe92a7ac088fc176 Mon Sep 17 00:00:00 2001 From: Anand Jain Date: Wed, 14 Mar 2018 16:29:12 +0800 Subject: [PATCH] btrfs: drop num argument from find_live_mirror() Obtain the stripes info from the map directly and so no need to pass it as an argument. Signed-off-by: Anand Jain Reviewed-by: Nikolay Borisov Signed-off-by: David Sterba --- fs/btrfs/volumes.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index dcc2b486b2c5..82c21f6eeb3e 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -5274,13 +5274,22 @@ int btrfs_is_parity_mirror(struct btrfs_fs_info *fs_info, u64 logical, u64 len) } static int find_live_mirror(struct btrfs_fs_info *fs_info, - struct map_lookup *map, int first, int num, + struct map_lookup *map, int first, int optimal, int dev_replace_is_ongoing) { int i; + int num_stripes; int tolerance; struct btrfs_device *srcdev; + ASSERT((map->type & + (BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID10))); + + if (map->type & BTRFS_BLOCK_GROUP_RAID10) + num_stripes = map->sub_stripes; + else + num_stripes = map->num_stripes; + if (dev_replace_is_ongoing && fs_info->dev_replace.cont_reading_from_srcdev_mode == BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID) @@ -5297,7 +5306,7 @@ static int find_live_mirror(struct btrfs_fs_info *fs_info, if (map->stripes[optimal].dev->bdev && (tolerance || map->stripes[optimal].dev != srcdev)) return optimal; - for (i = first; i < first + num; i++) { + for (i = first; i < first + num_stripes; i++) { if (map->stripes[i].dev->bdev && (tolerance || map->stripes[i].dev != srcdev)) return i; @@ -5834,7 +5843,6 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, stripe_index = mirror_num - 1; else { stripe_index = find_live_mirror(fs_info, map, 0, - map->num_stripes, current->pid % map->num_stripes, dev_replace_is_ongoing); mirror_num = stripe_index + 1; @@ -5863,7 +5871,7 @@ static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int old_stripe_index = stripe_index; stripe_index = find_live_mirror(fs_info, map, stripe_index, - map->sub_stripes, stripe_index + + stripe_index + current->pid % map->sub_stripes, dev_replace_is_ongoing); mirror_num = stripe_index - old_stripe_index + 1; -- 2.30.2