On Wed, Feb 28, 2018 at 03:46:41PM +0200, Nikolay Borisov wrote: > From: Yunlei He <heyunlei@xxxxxxxxxx> > > Thread A: Thread B: > > -f2fs_remount > -sbi->mount_opt.opt = 0; > <--- -f2fs_iget > -do_read_inode > -f2fs_init_extent_tree > -F2FS_I(inode)->extent_tree is NULL > -default_options && parse_options > -remount return > <--- -f2fs_map_blocks > -f2fs_lookup_extent_tree > -f2fs_bug_on(sbi, !et); > > The same problem with f2fs_new_inode. > > Signed-off-by: Yunlei He <heyunlei@xxxxxxxxxx> > Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> > Signed-off-by: Nikolay Borisov <nborisov@xxxxxxxx> > --- > Hi, > > Here is the 4.9.y backport Thanks, both now applied. greg k-h