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| author | Anand Jain <Anand.Jain@oracle.com> | 2018-03-14 09:29:13 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2018-03-31 01:41:11 +0200 |
| commit | 8ba0ae78218ad8fba73ca3be725303be50f936f1 (patch) | |
| tree | c335ff64158fed8e4d3ac8329e959b3bbdcb36a3 /fs/btrfs/volumes.c | |
| parent | btrfs: drop num argument from find_live_mirror() (diff) | |
| download | linux-8ba0ae78218ad8fba73ca3be725303be50f936f1.tar.xz linux-8ba0ae78218ad8fba73ca3be725303be50f936f1.zip | |
btrfs: drop optimal argument from find_live_mirror()
Drop optimal argument from the function find_live_mirror() as we can
deduce it in the function itself. Also rename optimal to
preferred_mirror.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/btrfs/volumes.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 82c21f6eeb3e..73de042158f1 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -5275,10 +5275,11 @@ 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 optimal, int dev_replace_is_ongoing) + int dev_replace_is_ongoing) { int i; int num_stripes; + int preferred_mirror; int tolerance; struct btrfs_device *srcdev; @@ -5290,6 +5291,8 @@ static int find_live_mirror(struct btrfs_fs_info *fs_info, else num_stripes = map->num_stripes; + preferred_mirror = first + current->pid % 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) @@ -5303,9 +5306,9 @@ static int find_live_mirror(struct btrfs_fs_info *fs_info, * mirror is available */ for (tolerance = 0; tolerance < 2; tolerance++) { - if (map->stripes[optimal].dev->bdev && - (tolerance || map->stripes[optimal].dev != srcdev)) - return optimal; + if (map->stripes[preferred_mirror].dev->bdev && + (tolerance || map->stripes[preferred_mirror].dev != srcdev)) + return preferred_mirror; for (i = first; i < first + num_stripes; i++) { if (map->stripes[i].dev->bdev && (tolerance || map->stripes[i].dev != srcdev)) @@ -5316,7 +5319,7 @@ static int find_live_mirror(struct btrfs_fs_info *fs_info, /* we couldn't find one that doesn't fail. Just return something * and the io error handling code will clean up eventually */ - return optimal; + return preferred_mirror; } static inline int parity_smaller(u64 a, u64 b) @@ -5843,7 +5846,6 @@ 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, - current->pid % map->num_stripes, dev_replace_is_ongoing); mirror_num = stripe_index + 1; } @@ -5871,8 +5873,6 @@ 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, - stripe_index + - current->pid % map->sub_stripes, dev_replace_is_ongoing); mirror_num = stripe_index - old_stripe_index + 1; } |