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bcachefs: Fix a scheduler splat in __bch2_next_write_buffer_flush_journal_buf()

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We're using mutex_lock() inside a wait_event() conditional -
prepare_to_wait() has already flipped task state, so potentially
blocking ops need annotation.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-05-06 10:14:13 -04:00
parent c258c08add
commit 72e71bf029
1 changed files with 2 additions and 0 deletions
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2
fs/bcachefs/journal.c
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@ -870,6 +870,8 @@ static struct journal_buf *__bch2_next_write_buffer_flush_journal_buf(struct jou
{
struct journal_buf *ret = NULL;
/* We're inside wait_event(), but using mutex_lock(: */
sched_annotate_sleep();
mutex_lock(&j->buf_lock);
spin_lock(&j->lock);
max_seq = min(max_seq, journal_cur_seq(j));