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bcachefs: bch2_dev_get_ioref2(); io_read.c

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-05-03 12:50:22 -04:00
parent 91ffdecfc7
commit 465bf6f42a
1 changed files with 9 additions and 5 deletions
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14
fs/bcachefs/io_read.c
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@ -800,7 +800,6 @@ int __bch2_read_extent(struct btree_trans *trans, struct bch_read_bio *orig,
struct bch_fs *c = trans->c;
struct extent_ptr_decoded pick;
struct bch_read_bio *rbio = NULL;
struct bch_dev *ca = NULL;
struct promote_op *promote = NULL;
bool bounce = false, read_full = false, narrow_crcs = false;
struct bpos data_pos = bkey_start_pos(k.k);
@ -831,7 +830,7 @@ retry_pick:
goto err;
}
ca = bch2_dev_bkey_exists(c, pick.ptr.dev);
struct bch_dev *ca = bch2_dev_get_ioref2(c, pick.ptr.dev, READ);
/*
* Stale dirty pointers are treated as IO errors, but @failed isn't
@ -841,9 +840,11 @@ retry_pick:
*/
if ((flags & BCH_READ_IN_RETRY) &&
!pick.ptr.cached &&
ca &&
unlikely(dev_ptr_stale(ca, &pick.ptr))) {
read_from_stale_dirty_pointer(trans, ca, k, pick.ptr);
bch2_mark_io_failure(failed, &pick);
percpu_ref_put(&ca->io_ref);
goto retry_pick;
}
@ -858,8 +859,11 @@ retry_pick:
* can happen if we retry, and the extent we were going to read
* has been merged in the meantime:
*/
if (pick.crc.compressed_size > orig->bio.bi_vcnt * PAGE_SECTORS)
if (pick.crc.compressed_size > orig->bio.bi_vcnt * PAGE_SECTORS) {
if (ca)
percpu_ref_put(&ca->io_ref);
goto hole;
}
iter.bi_size = pick.crc.compressed_size << 9;
goto get_bio;
@ -964,7 +968,7 @@ get_bio:
rbio->bvec_iter = iter;
rbio->offset_into_extent= offset_into_extent;
rbio->flags = flags;
rbio->have_ioref = pick_ret > 0 && bch2_dev_get_ioref(ca, READ);
rbio->have_ioref = ca != NULL;
rbio->narrow_crcs = narrow_crcs;
rbio->hole = 0;
rbio->retry = 0;
@ -994,7 +998,7 @@ get_bio:
* If it's being moved internally, we don't want to flag it as a cache
* hit:
*/
if (pick.ptr.cached && !(flags & BCH_READ_NODECODE))
if (ca && pick.ptr.cached && !(flags & BCH_READ_NODECODE))
bch2_bucket_io_time_reset(trans, pick.ptr.dev,
PTR_BUCKET_NR(ca, &pick.ptr), READ);