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bcachefs: Don't disallow btree writes to RO devices

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There's an inherent race with setting devices RO when they have dirty
btree nodes on them. We already check if a btree node is on an RO device
before we dirty it, so this patch just allows those writes so that we
don't have errors forcing the entire filesystem read only when trying to
remove a device.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-08-03 13:58:36 -04:00 committed by Kent Overstreet
parent 79e72a9093
commit 768b42a7eb
1 changed files with 2 additions and 1 deletions
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3
fs/bcachefs/io.c
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@ -481,7 +481,8 @@ void bch2_submit_wbio_replicas(struct bch_write_bio *wbio, struct bch_fs *c,
n->c = c;
n->dev = ptr->dev;
n->have_ioref = bch2_dev_get_ioref(ca, WRITE);
n->have_ioref = bch2_dev_get_ioref(ca,
type == BCH_DATA_btree ? READ : WRITE);
n->submit_time = local_clock();
n->bio.bi_iter.bi_sector = ptr->offset;