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bcachefs: Mark newly allocated btree nodes as accessed

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This was a major oversight - this means under memory pressure we can end
up reading in a btree node, then having it evicted before we get to use
it.

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 2021-04-29 16:55:26 -04:00 committed by Kent Overstreet
parent 595c1e9bab
commit e68031fb46
1 changed files with 1 additions and 0 deletions
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fs/bcachefs/btree_cache.c
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@ -590,6 +590,7 @@ out:
b->sib_u64s[1] = 0;
b->whiteout_u64s = 0;
bch2_btree_keys_init(b);
set_btree_node_accessed(b);
bch2_time_stats_update(&c->times[BCH_TIME_btree_node_mem_alloc],
start_time);