Let me drop this, since I missed there was a patch to introdcued this. :) On 11/06, Jaegeuk Kim wrote: > If background GC is running very frequently by gc_urgent, the next GC > can see unwritten data generated by the previous GC, which incurs to write > stale corrupted data in disk. > > Cc: <stable@xxxxxxxxxxxxxxx> > Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> > --- > fs/f2fs/gc.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c > index a07241fb8537..49fea136a3f3 100644 > --- a/fs/f2fs/gc.c > +++ b/fs/f2fs/gc.c > @@ -658,6 +658,9 @@ static int ra_data_block(struct inode *inode, pgoff_t index) > fio.page = page; > fio.new_blkaddr = fio.old_blkaddr = dn.data_blkaddr; > > + /* wait writeback before reading out */ > + f2fs_wait_on_block_writeback(inode, dn.data_blkaddr); > + > fio.encrypted_page = f2fs_pagecache_get_page(META_MAPPING(sbi), > dn.data_blkaddr, > FGP_LOCK | FGP_CREAT, GFP_NOFS); > @@ -755,6 +758,9 @@ static int move_data_block(struct inode *inode, block_t bidx, > fio.page = page; > fio.new_blkaddr = fio.old_blkaddr = dn.data_blkaddr; > > + /* wait writeback before reading out */ > + f2fs_wait_on_block_writeback(inode, fio.old_blkaddr); > + > if (lfs_mode) > down_write(&fio.sbi->io_order_lock); > > -- > 2.19.0.605.g01d371f741-goog
