ovl: lookup whiteouts outside iterate_dir()

If jffs2 can deadlock on overlayfs readdir because it takes the same lock
on ->iterate() as in ->lookup().

Fix by moving whiteout checking outside iterate_dir().  Optimized by
collecting potential whiteouts (DT_CHR) in a temporary list and if
non-empty iterating throug these and checking for a 0/0 chardev.

Signed-off-by: Miklos Szeredi <[email protected]>
Fixes: 49c21e1cacd7 ("ovl: check whiteout while reading directory")
Reported-by: Roman Yeryomin <[email protected]> 

0 files changed, 0 insertions, 0 deletions