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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 13:29:59 -0500 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-21 13:27:10 -0500 |
| commit | ec4edd7b9d2038a97e0ba3fad8fc8492b0d12d35 (patch) | |
| tree | 2ba47c4de8460460489d335e3f562eab8819ce96 /fs/bcachefs/super.c | |
| parent | 2acc59dd88d27ad69b66ded80df16c042b04eeec (diff) | |
| download | linux-ec4edd7b9d2038a97e0ba3fad8fc8492b0d12d35.tar.gz linux-ec4edd7b9d2038a97e0ba3fad8fc8492b0d12d35.tar.bz2 linux-ec4edd7b9d2038a97e0ba3fad8fc8492b0d12d35.zip | |
bcachefs: Prep work for variable size btree node buffers
bcachefs btree nodes are big - typically 256k - and btree roots are
pinned in memory. As we're now up to 18 btrees, we now have significant
memory overhead in mostly empty btree roots.
And in the future we're going to start enforcing that certain btree node
boundaries exist, to solve lock contention issues - analagous to XFS's
AGIs.
Thus, we need to start allocating smaller btree node buffers when we
can. This patch changes code that refers to the filesystem constant
c->opts.btree_node_size to refer to the btree node buffer size -
btree_buf_bytes() - where appropriate.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/super.c')
| -rw-r--r-- | fs/bcachefs/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/bcachefs/super.c b/fs/bcachefs/super.c index a3ec21f229ed..9262a9298fcd 100644 --- a/fs/bcachefs/super.c +++ b/fs/bcachefs/super.c @@ -883,7 +883,7 @@ static struct bch_fs *bch2_fs_alloc(struct bch_sb *sb, struct bch_opts opts) !(c->pcpu = alloc_percpu(struct bch_fs_pcpu)) || !(c->online_reserved = alloc_percpu(u64)) || mempool_init_kvpmalloc_pool(&c->btree_bounce_pool, 1, - btree_bytes(c)) || + c->opts.btree_node_size) || mempool_init_kmalloc_pool(&c->large_bkey_pool, 1, 2048) || !(c->unused_inode_hints = kcalloc(1U << c->inode_shard_bits, sizeof(u64), GFP_KERNEL))) { |