diff options
| author | Chao Yu <yuchao0@huawei.com> | 2017-01-07 18:52:01 +0800 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-04-13 12:34:45 +0200 |
| commit | f83156d74807456f028d9cacf13ab9bbf9e28216 (patch) | |
| tree | 45110426e91c1fdfd757801d2520904ec1a28edb /fs/f2fs/node.c | |
| parent | 67df468dce072357ab34d62248e8e5c63d1a4942 (diff) | |
f2fs: check in-memory nat version bitmap
This patch adds a mirror for nat version bitmap, and use it to detect
in-memory bitmap corruption which may be caused by bit-transition of
cache or memory overflow.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/node.c')
| -rw-r--r-- | fs/f2fs/node.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 039ad4a94..c17df58d6 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -2383,6 +2383,14 @@ static int init_node_manager(struct f2fs_sb_info *sbi) GFP_KERNEL); if (!nm_i->nat_bitmap) return -ENOMEM; + +#ifdef CONFIG_F2FS_CHECK_FS + nm_i->nat_bitmap_mir = kmemdup(version_bitmap, nm_i->bitmap_size, + GFP_KERNEL); + if (!nm_i->nat_bitmap_mir) + return -ENOMEM; +#endif + return 0; } @@ -2457,6 +2465,9 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) up_write(&nm_i->nat_tree_lock); kfree(nm_i->nat_bitmap); +#ifdef CONFIG_F2FS_CHECK_FS + kfree(nm_i->nat_bitmap_mir); +#endif sbi->nm_info = NULL; kfree(nm_i); } |