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btrfs: scrub: remove root and csum_root arguments from scrub_simple_mirror()

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We don't need to pass the roots as arguments, reading them from the
rb-tree is cheap.  Thus there is really not much need to pre-fetch it
and pass it all the way from scrub_stripe().

And we already have more than enough arguments in scrub_simple_mirror()
and scrub_simple_stripe(), it's better to remove them and only grab
those roots in scrub_simple_mirror().

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2023-01-16 15:04:13 +08:00 committed by David Sterba
parent 1d40329736
commit 6b4d375a81
1 changed files with 9 additions and 19 deletions
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28
fs/btrfs/scrub.c
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@ -3509,8 +3509,6 @@ static int sync_write_pointer_for_zoned(struct scrub_ctx *sctx, u64 logical,
* and @logical_length parameter.
*/
static int scrub_simple_mirror(struct scrub_ctx *sctx,
struct btrfs_root *extent_root,
struct btrfs_root *csum_root,
struct btrfs_block_group *bg,
struct map_lookup *map,
u64 logical_start, u64 logical_length,
@ -3518,6 +3516,8 @@ static int scrub_simple_mirror(struct scrub_ctx *sctx,
u64 physical, int mirror_num)
{
struct btrfs_fs_info *fs_info = sctx->fs_info;
struct btrfs_root *csum_root = btrfs_csum_root(fs_info, bg->start);
struct btrfs_root *extent_root = btrfs_extent_root(fs_info, bg->start);
const u64 logical_end = logical_start + logical_length;
/* An artificial limit, inherit from old scrub behavior */
const u32 max_length = SZ_64K;
@ -3667,8 +3667,6 @@ static int simple_stripe_mirror_num(struct map_lookup *map, int stripe_index)
}
static int scrub_simple_stripe(struct scrub_ctx *sctx,
struct btrfs_root *extent_root,
struct btrfs_root *csum_root,
struct btrfs_block_group *bg,
struct map_lookup *map,
struct btrfs_device *device,
@ -3688,9 +3686,9 @@ static int scrub_simple_stripe(struct scrub_ctx *sctx,
* just RAID1, so we can reuse scrub_simple_mirror() to scrub
* this stripe.
*/
ret = scrub_simple_mirror(sctx, extent_root, csum_root, bg, map,
cur_logical, BTRFS_STRIPE_LEN, device,
cur_physical, mirror_num);
ret = scrub_simple_mirror(sctx, bg, map, cur_logical,
BTRFS_STRIPE_LEN, device, cur_physical,
mirror_num);
if (ret)
return ret;
/* Skip to next stripe which belongs to the target device */
@ -3708,8 +3706,6 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
int stripe_index)
{
struct btrfs_fs_info *fs_info = sctx->fs_info;
struct btrfs_root *root;
struct btrfs_root *csum_root;
struct blk_plug plug;
struct map_lookup *map = em->map_lookup;
const u64 profile = map->type & BTRFS_BLOCK_GROUP_PROFILE_MASK;
@ -3732,9 +3728,6 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
atomic_read(&sctx->bios_in_flight) == 0);
scrub_blocked_if_needed(fs_info);
root = btrfs_extent_root(fs_info, bg->start);
csum_root = btrfs_csum_root(fs_info, bg->start);
/*
* collect all data csums for the stripe to avoid seeking during
* the scrub. This might currently (crc32) end up to be about 1MB
@ -3766,16 +3759,14 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
* Only @physical and @mirror_num needs to calculated using
* @stripe_index.
*/
ret = scrub_simple_mirror(sctx, root, csum_root, bg, map,
bg->start, bg->length, scrub_dev,
map->stripes[stripe_index].physical,
ret = scrub_simple_mirror(sctx, bg, map, bg->start, bg->length,
scrub_dev, map->stripes[stripe_index].physical,
stripe_index + 1);
offset = 0;
goto out;
}
if (profile & (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID10)) {
ret = scrub_simple_stripe(sctx, root, csum_root, bg, map,
scrub_dev, stripe_index);
ret = scrub_simple_stripe(sctx, bg, map, scrub_dev, stripe_index);
offset = (stripe_index / map->sub_stripes) << BTRFS_STRIPE_LEN_SHIFT;
goto out;
}
@ -3821,8 +3812,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
* We can reuse scrub_simple_mirror() here, as the repair part
* is still based on @mirror_num.
*/
ret = scrub_simple_mirror(sctx, root, csum_root, bg, map,
logical, BTRFS_STRIPE_LEN,
ret = scrub_simple_mirror(sctx, bg, map, logical, BTRFS_STRIPE_LEN,
scrub_dev, physical, 1);
if (ret < 0)
goto out;