bcachefs: optimize __bch2_trans_get(), kill DEBUG_TRANSACTIONS

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- Some tweaks to greatly reduce locking overhead for the list of btree
   transactions, so that it can always be enabled: leave btree_trans
   objects on the list when they're on the percpu single item freelist,
   and only check for duplicates in the same process when
   CONFIG_BCACHEFS_DEBUG is enabled

 - don't zero out the full btree_trans() unless we allocated it from
   the mempool

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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This commit is contained in:

Kent Overstreet 2023-12-11 11:11:22 -05:00

parent fea153a845

commit 31403dca5b

5 changed files with 100 additions and 106 deletions

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8

fs/bcachefs/Kconfig

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166

fs/bcachefs/btree_iter.c

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3

fs/bcachefs/btree_locking.c

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11

fs/bcachefs/btree_types.h

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18

fs/bcachefs/debug.c

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