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path: root/fs/bcachefs/seqmutex.h
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2024-06-23bcachefs: fix seqmutex_relock()Kent Overstreet
We were grabbing the sequence number before unlock incremented it - fix this by moving the increment to seqmutex_lock() (so the seqmutex_relock() failure path skips the mutex_trylock()), and returning the sequence number from unlock(), to make the API simpler and safer. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2023-10-22bcachefs: seqmutex; fix a lockdep splatKent Overstreet
We can't be holding btree_trans_lock while copying to user space, which might incur a page fault. To fix this, convert it to a seqmutex so we can unlock/relock. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>