git.baikalelectronics.ru Git - kernel.git/commit

author	Yunlei He <heyunlei@huawei.com>
	Fri, 19 May 2017 07:06:12 +0000 (15:06 +0800)
committer	Jaegeuk Kim <jaegeuk@kernel.org>
	Wed, 24 May 2017 04:07:18 +0000 (21:07 -0700)
commit	f30e6a32f6850fd812474889c28c0a8b753ab570
tree	7594af62186ba7a56da3f25e2e442137a0183ce5	tree \| snapshot
parent	ac6f4fb62a6da457850462fd36ac72fdc713d6e2	commit \| diff

f2fs: fix a bug caused by NULL extent tree

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@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>