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btrfs: scrub: switch scrub_simple_mirror() to scrub_stripe infrastructure

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Switch scrub_simple_mirror() to the new scrub_stripe infrastructure.

Since scrub_simple_mirror() is the core part of scrub (only RAID56
P/Q stripes don't utilize it), we can get rid of a big chunk of code,
mostly scrub_extent(), scrub_sectors() and directly called functions.

There is a functionality change:

- Scrub speed throttle now only affects read on the scrubbing device
  Writes (for repair and replace), and reads from other mirrors won't
  be limited by the set limits.

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
2023-03-20 10:12:58 +08:00
committed by David Sterba
parent 54765392a1
commit e02ee89baa
2 changed files with 28 additions and 473 deletions
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491
fs/btrfs/scrub.c
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10
fs/btrfs/scrub.h
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@@ -13,14 +13,4 @@ int btrfs_scrub_cancel_dev(struct btrfs_device *dev);
int btrfs_scrub_progress(struct btrfs_fs_info *fs_info, u64 devid,
struct btrfs_scrub_progress *progress);
/*
* The following functions are temporary exports to avoid warning on unused
* static functions.
*/
struct scrub_stripe;
int queue_scrub_stripe(struct scrub_ctx *sctx,
struct btrfs_block_group *bg,
struct btrfs_device *dev, int mirror_num,
u64 logical, u32 length, u64 physical);
#endif