diff options
Diffstat (limited to 'fs/reiserfs/journal.c')
| -rw-r--r-- | fs/reiserfs/journal.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c index 2d04efb22eea..bc8fe963b3cc 100644 --- a/fs/reiserfs/journal.c +++ b/fs/reiserfs/journal.c @@ -877,6 +877,19 @@ static int write_ordered_buffers(spinlock_t * lock, if (!buffer_uptodate(bh)) { ret = -EIO; } + /* ugly interaction with invalidatepage here. + * reiserfs_invalidate_page will pin any buffer that has a valid + * journal head from an older transaction. If someone else sets + * our buffer dirty after we write it in the first loop, and + * then someone truncates the page away, nobody will ever write + * the buffer. We're safe if we write the page one last time + * after freeing the journal header. + */ + if (buffer_dirty(bh) && unlikely(bh->b_page->mapping == NULL)) { + spin_unlock(lock); + ll_rw_block(WRITE, 1, &bh); + spin_lock(lock); + } put_bh(bh); cond_resched_lock(lock); } |