Release 4.17 fs/btrfs/raid56.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2012 Fusion-io All rights reserved.
* Copyright (C) 2012 Intel Corp. All rights reserved.
*/
#ifndef BTRFS_RAID56_H
#define BTRFS_RAID56_H
static inline int nr_parity_stripes(struct map_lookup *map)
{
if (map->type & BTRFS_BLOCK_GROUP_RAID5)
return 1;
else if (map->type & BTRFS_BLOCK_GROUP_RAID6)
return 2;
else
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Woodhouse | 39 | 100.00% | 1 | 100.00% |
| Total | 39 | 100.00% | 1 | 100.00% |
static inline int nr_data_stripes(struct map_lookup *map)
{
return map->num_stripes - nr_parity_stripes(map);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Woodhouse | 22 | 100.00% | 1 | 100.00% |
| Total | 22 | 100.00% | 1 | 100.00% |
#define RAID5_P_STRIPE ((u64)-2)
#define RAID6_Q_STRIPE ((u64)-1)
#define is_parity_stripe(x) (((x) == RAID5_P_STRIPE) || \
((x) == RAID6_Q_STRIPE))
struct btrfs_raid_bio;
struct btrfs_device;
int raid56_parity_recover(struct btrfs_fs_info *fs_info, struct bio *bio,
struct btrfs_bio *bbio, u64 stripe_len,
int mirror_num, int generic_io);
int raid56_parity_write(struct btrfs_fs_info *fs_info, struct bio *bio,
struct btrfs_bio *bbio, u64 stripe_len);
void raid56_add_scrub_pages(struct btrfs_raid_bio *rbio, struct page *page,
u64 logical);
struct btrfs_raid_bio *
raid56_parity_alloc_scrub_rbio(struct btrfs_fs_info *fs_info, struct bio *bio,
struct btrfs_bio *bbio, u64 stripe_len,
struct btrfs_device *scrub_dev,
unsigned long *dbitmap, int stripe_nsectors);
void raid56_parity_submit_scrub_rbio(struct btrfs_raid_bio *rbio);
struct btrfs_raid_bio *
raid56_alloc_missing_rbio(struct btrfs_fs_info *fs_info, struct bio *bio,
struct btrfs_bio *bbio, u64 length);
void raid56_submit_missing_rbio(struct btrfs_raid_bio *rbio);
int btrfs_alloc_stripe_hash_table(struct btrfs_fs_info *info);
void btrfs_free_stripe_hash_table(struct btrfs_fs_info *info);
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David Woodhouse | 143 | 55.86% | 1 | 14.29% |
| Miao Xie | 65 | 25.39% | 3 | 42.86% |
| Omar Sandoval | 36 | 14.06% | 1 | 14.29% |
| Jeff Mahoney | 8 | 3.12% | 1 | 14.29% |
| David Sterba | 4 | 1.56% | 1 | 14.29% |
| Total | 256 | 100.00% | 7 | 100.00% |
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