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gentoo-overlay/sys-kernel/hardened-kernel/files/linux-6.12/0043-bcachefs-io_opts_to_re...

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From bdad263284332336642784929b9e4bf3887560b8 Mon Sep 17 00:00:00 2001
From: Kent Overstreet <kent.overstreet@linux.dev>
Date: Sun, 20 Oct 2024 02:28:51 -0400
Subject: [PATCH 043/233] bcachefs: io_opts_to_rebalance_opts()
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
New helper to simplify bch2_bkey_set_needs_rebalance()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Alexander Miroshnichenko <alex@millerson.name>
---
fs/bcachefs/data_update.c | 2 +-
fs/bcachefs/extents.c | 60 ++++++++++--------------------------
fs/bcachefs/extents.h | 3 +-
fs/bcachefs/extents_format.h | 5 +++
fs/bcachefs/io_misc.c | 2 +-
fs/bcachefs/io_write.c | 2 +-
fs/bcachefs/opts.h | 13 ++++++++
fs/bcachefs/reflink.c | 2 +-
8 files changed, 39 insertions(+), 50 deletions(-)
diff --git a/fs/bcachefs/data_update.c b/fs/bcachefs/data_update.c
index 90da57a26962..e4af2ccdf4c8 100644
--- a/fs/bcachefs/data_update.c
+++ b/fs/bcachefs/data_update.c
@@ -357,7 +357,7 @@ static int __bch2_data_update_index_update(struct btree_trans *trans,
k.k->p, bkey_start_pos(&insert->k)) ?:
bch2_insert_snapshot_whiteouts(trans, m->btree_id,
k.k->p, insert->k.p) ?:
- bch2_bkey_set_needs_rebalance(c, insert, &op->opts) ?:
+ bch2_bkey_set_needs_rebalance(c, &op->opts, insert) ?:
bch2_trans_update(trans, &iter, insert,
BTREE_UPDATE_internal_snapshot_node) ?:
bch2_trans_commit(trans, &op->res,
diff --git a/fs/bcachefs/extents.c b/fs/bcachefs/extents.c
index ee0e86f0becd..a134aa5a76bb 100644
--- a/fs/bcachefs/extents.c
+++ b/fs/bcachefs/extents.c
@@ -1478,55 +1478,27 @@ u64 bch2_bkey_sectors_need_rebalance(struct bch_fs *c, struct bkey_s_c k)
return sectors;
}
-int bch2_bkey_set_needs_rebalance(struct bch_fs *c, struct bkey_i *_k,
- struct bch_io_opts *opts)
+int bch2_bkey_set_needs_rebalance(struct bch_fs *c, struct bch_io_opts *opts,
+ struct bkey_i *_k)
{
- struct bkey_s k = bkey_i_to_s(_k);
- struct bch_extent_rebalance *r;
- unsigned target = opts->background_target;
- unsigned compression = opts->background_compression;
- bool needs_rebalance;
-
- if (!bkey_extent_is_direct_data(k.k))
+ if (!bkey_extent_is_direct_data(&_k->k))
return 0;
- /* get existing rebalance entry: */
- r = (struct bch_extent_rebalance *) bch2_bkey_rebalance_opts(k.s_c);
- if (r) {
- if (k.k->type == KEY_TYPE_reflink_v) {
- /*
- * indirect extents: existing options take precedence,
- * so that we don't move extents back and forth if
- * they're referenced by different inodes with different
- * options:
- */
- if (r->background_target)
- target = r->background_target;
- if (r->background_compression)
- compression = r->background_compression;
+ struct bkey_s k = bkey_i_to_s(_k);
+ struct bch_extent_rebalance *old =
+ (struct bch_extent_rebalance *) bch2_bkey_rebalance_opts(k.s_c);
+
+ if (k.k->type == KEY_TYPE_reflink_v ||
+ bch2_bkey_ptrs_need_rebalance(c, k.s_c, opts->background_target, opts->background_compression)) {
+ if (!old) {
+ old = bkey_val_end(k);
+ k.k->u64s += sizeof(*old) / sizeof(u64);
}
- r->background_target = target;
- r->background_compression = compression;
- }
-
- needs_rebalance = bch2_bkey_ptrs_need_rebalance(c, k.s_c, target, compression);
-
- if (needs_rebalance && !r) {
- union bch_extent_entry *new = bkey_val_end(k);
-
- new->rebalance.type = 1U << BCH_EXTENT_ENTRY_rebalance;
- new->rebalance.background_compression = compression;
- new->rebalance.background_target = target;
- new->rebalance.unused = 0;
- k.k->u64s += extent_entry_u64s(new);
- } else if (!needs_rebalance && r && k.k->type != KEY_TYPE_reflink_v) {
- /*
- * For indirect extents, don't delete the rebalance entry when
- * we're finished so that we know we specifically moved it or
- * compressed it to its current location/compression type
- */
- extent_entry_drop(k, (union bch_extent_entry *) r);
+ *old = io_opts_to_rebalance_opts(opts);
+ } else {
+ if (old)
+ extent_entry_drop(k, (union bch_extent_entry *) old);
}
return 0;
diff --git a/fs/bcachefs/extents.h b/fs/bcachefs/extents.h
index 9374599b384d..97af0d6e4319 100644
--- a/fs/bcachefs/extents.h
+++ b/fs/bcachefs/extents.h
@@ -715,8 +715,7 @@ unsigned bch2_bkey_ptrs_need_rebalance(struct bch_fs *, struct bkey_s_c,
unsigned, unsigned);
u64 bch2_bkey_sectors_need_rebalance(struct bch_fs *, struct bkey_s_c);
-int bch2_bkey_set_needs_rebalance(struct bch_fs *, struct bkey_i *,
- struct bch_io_opts *);
+int bch2_bkey_set_needs_rebalance(struct bch_fs *, struct bch_io_opts *, struct bkey_i *);
/* Generic extent code: */
diff --git a/fs/bcachefs/extents_format.h b/fs/bcachefs/extents_format.h
index 2cc3e60f3b12..520697f236c0 100644
--- a/fs/bcachefs/extents_format.h
+++ b/fs/bcachefs/extents_format.h
@@ -215,6 +215,11 @@ struct bch_extent_rebalance {
#endif
};
+/* subset of BCH_INODE_OPTS */
+#define BCH_REBALANCE_OPTS() \
+ x(background_compression) \
+ x(background_target)
+
union bch_extent_entry {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ || __BITS_PER_LONG == 64
unsigned long type;
diff --git a/fs/bcachefs/io_misc.c b/fs/bcachefs/io_misc.c
index f283051758d6..e2acf21ac9b0 100644
--- a/fs/bcachefs/io_misc.c
+++ b/fs/bcachefs/io_misc.c
@@ -461,7 +461,7 @@ case LOGGED_OP_FINSERT_shift_extents:
op->v.pos = cpu_to_le64(insert ? bkey_start_offset(&delete.k) : delete.k.p.offset);
- ret = bch2_bkey_set_needs_rebalance(c, copy, &opts) ?:
+ ret = bch2_bkey_set_needs_rebalance(c, &opts, copy) ?:
bch2_btree_insert_trans(trans, BTREE_ID_extents, &delete, 0) ?:
bch2_btree_insert_trans(trans, BTREE_ID_extents, copy, 0) ?:
bch2_logged_op_update(trans, &op->k_i) ?:
diff --git a/fs/bcachefs/io_write.c b/fs/bcachefs/io_write.c
index 96720adcfee0..f2f69e5e0910 100644
--- a/fs/bcachefs/io_write.c
+++ b/fs/bcachefs/io_write.c
@@ -369,7 +369,7 @@ static int bch2_write_index_default(struct bch_write_op *op)
bkey_start_pos(&sk.k->k),
BTREE_ITER_slots|BTREE_ITER_intent);
- ret = bch2_bkey_set_needs_rebalance(c, sk.k, &op->opts) ?:
+ ret = bch2_bkey_set_needs_rebalance(c, &op->opts, sk.k) ?:
bch2_extent_update(trans, inum, &iter, sk.k,
&op->res,
op->new_i_size, &op->i_sectors_delta,
diff --git a/fs/bcachefs/opts.h b/fs/bcachefs/opts.h
index dd27ef556611..13555bc35f00 100644
--- a/fs/bcachefs/opts.h
+++ b/fs/bcachefs/opts.h
@@ -642,4 +642,17 @@ static inline void bch2_io_opts_fixups(struct bch_io_opts *opts)
struct bch_io_opts bch2_opts_to_inode_opts(struct bch_opts);
bool bch2_opt_is_inode_opt(enum bch_opt_id);
+/* rebalance opts: */
+
+static inline struct bch_extent_rebalance io_opts_to_rebalance_opts(struct bch_io_opts *opts)
+{
+ return (struct bch_extent_rebalance) {
+ .type = BIT(BCH_EXTENT_ENTRY_rebalance),
+#define x(_name) \
+ ._name = opts->_name,
+ BCH_REBALANCE_OPTS()
+#undef x
+ };
+};
+
#endif /* _BCACHEFS_OPTS_H */
diff --git a/fs/bcachefs/reflink.c b/fs/bcachefs/reflink.c
index f457925fa362..8a36ebd9dd9c 100644
--- a/fs/bcachefs/reflink.c
+++ b/fs/bcachefs/reflink.c
@@ -547,7 +547,7 @@ s64 bch2_remap_range(struct bch_fs *c,
min(src_k.k->p.offset - src_want.offset,
dst_end.offset - dst_iter.pos.offset));
- ret = bch2_bkey_set_needs_rebalance(c, new_dst.k, &opts) ?:
+ ret = bch2_bkey_set_needs_rebalance(c, &opts, new_dst.k) ?:
bch2_extent_update(trans, dst_inum, &dst_iter,
new_dst.k, &disk_res,
new_i_size, i_sectors_delta,
--
2.45.2
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