bcachefs: Ensure bch2_btree_node_lock_write_nofail() never fails

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In order for bch2_btree_node_lock_write_nofail() to never produce a
deadlock, we must ensure we're never holding read locks when using it.
Fortunately, it's only used from code paths where any read locks may be
safely dropped.

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

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This commit is contained in:

Kent Overstreet 2023-03-06 08:58:02 -05:00

parent 0d7009d7ca

commit 2ec254c098

2 changed files with 38 additions and 8 deletions

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34

fs/bcachefs/btree_locking.c

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12

fs/bcachefs/btree_locking.h

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