Btrfs: pass lockdep rwsem metadata to async commit transaction

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The freeze rwsem is taken by sb_start_intwrite() and dropped during the
commit_ or end_transaction().  In the async case, that happens in a worker
thread.  Tell lockdep the calling thread is releasing ownership of the
rwsem and the async thread is picking it up.

XFS plays the same trick in fs/xfs/xfs_aops.c.

Signed-off-by: Sage Weil <sage@inktank.com>

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Sage Weil 2012-08-30 16:26:15 -06:00 • committed by Chris Mason

parent 2aaa665581

commit 6fc4e35485

1 changed files with 16 additions and 0 deletions

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fs/btrfs/transaction.c

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