bcachefs: All held locks must be in a btree path

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With the new deadlock cycle detector, it's critical that all held locks
be marked in a btree_path, because that's what the cycle detector
traverses - any locks that aren't correctly marked will cause deadlocks.

This changes the btree_path to allocate some btree_paths for the new
nodes, since until the final update is done we otherwise don't have a
path referencing them.

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

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This commit is contained in:

Kent Overstreet 2022-09-16 14:42:38 -04:00

parent 367d72dd5f

commit e4215d0fec

3 changed files with 84 additions and 66 deletions

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69

fs/bcachefs/btree_iter.c

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3

fs/bcachefs/btree_iter.h

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78

fs/bcachefs/btree_update_interior.c

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