| commit | 6a8f8ca582a1bafe6b620e000316206c8719f1d0 | [log] [tgz] |
|---|---|---|
| author | Jaegeuk Kim <jaegeuk@kernel.org> | Wed Oct 29 14:37:22 2014 -0700 |
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | Tue Nov 04 17:34:14 2014 -0800 |
| tree | c66b23b131af9dceb04004d8851cbcbb17467bba | |
| parent | adf4983bde9c07c074be12eadb040a88479aa421 [diff] |
f2fs: avoid race condition in handling wait_io
__submit_merged_bio f2fs_write_end_io f2fs_write_end_io
wait_io = X wait_io = x
complete(X) complete(X)
wait_io = NULL
wait_for_completion()
free(X)
spin_lock(X)
kernel panic
In order to avoid this, this patch removes the wait_io facility.
Instead, we can use wait_on_all_pages_writeback(sbi) to wait for end_ios.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>