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bcachefs: Self healing writes are BCH_WRITE_alloc_nowait

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If a drive is failing and we're moving data off of it, we can't
necessairly depend on capacity/disk reservation calculations to avoid
deadlocking/blocking on the allocator.

And, we don't want to queue up infinite self healing moves anyways.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2025-01-18 02:05:57 -05:00
parent 8ff92a9e4e
commit 29ad31c780
1 changed files with 2 additions and 2 deletions
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4
fs/bcachefs/io_read.c
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@ -188,12 +188,12 @@ static struct bch_read_bio *__promote_alloc(struct btree_trans *trans,
goto err;
}
struct data_update_opts update_opts = {};
struct data_update_opts update_opts = { .write_flags = BCH_WRITE_alloc_nowait };
if (!have_io_error(failed)) {
update_opts.target = orig->opts.promote_target;
update_opts.extra_replicas = 1;
update_opts.write_flags = BCH_WRITE_alloc_nowait|BCH_WRITE_cached;
update_opts.write_flags |= BCH_WRITE_cached;
update_opts.write_flags |= BCH_WRITE_only_specified_devs;
} else {
update_opts.target = orig->opts.foreground_target;