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bcachefs: add btree_node_merging_disabled debug param

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-04-05 16:21:39 -04:00
parent ac01928b8e
commit 5577881455
2 changed files with 5 additions and 0 deletions
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2
fs/bcachefs/bcachefs.h
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@ -359,6 +359,8 @@ do { \
#define BCH_DEBUG_PARAMS_ALWAYS() \ #define BCH_DEBUG_PARAMS_ALWAYS() \
BCH_DEBUG_PARAM(key_merging_disabled, \ BCH_DEBUG_PARAM(key_merging_disabled, \
"Disables merging of extents") \ "Disables merging of extents") \
BCH_DEBUG_PARAM(btree_node_merging_disabled, \
"Disables merging of btree nodes") \
BCH_DEBUG_PARAM(btree_gc_always_rewrite, \ BCH_DEBUG_PARAM(btree_gc_always_rewrite, \
"Causes mark and sweep to compact and rewrite every " \ "Causes mark and sweep to compact and rewrite every " \
"btree node it traverses") \ "btree node it traverses") \

3
fs/bcachefs/btree_update_interior.h
View File

@ -144,6 +144,9 @@ static inline int bch2_foreground_maybe_merge_sibling(struct btree_trans *trans,
EBUG_ON(!btree_node_locked(path, level)); EBUG_ON(!btree_node_locked(path, level));
if (bch2_btree_node_merging_disabled)
return 0;
b = path->l[level].b; b = path->l[level].b;
if (b->sib_u64s[sib] > trans->c->btree_foreground_merge_threshold) if (b->sib_u64s[sib] > trans->c->btree_foreground_merge_threshold)
return 0; return 0;