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f2fs: support in-memory inode checksum when checking consistency

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Enable in-memory inode checksum to protect metadata blocks from
in-memory scribbles when checking consistency, which has no
performance requirements.

Signed-off-by: Weichao Guo <guoweichao@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Weichao Guo 2018-03-09 23:10:21 +08:00 committed by Jaegeuk Kim
parent 4e423832a6
commit 54c55c4e4f
3 changed files with 21 additions and 1 deletions
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8
fs/f2fs/inode.c
View File

@ -162,8 +162,12 @@ bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
return true;
#ifdef CONFIG_F2FS_CHECK_FS
if (!f2fs_enable_inode_chksum(sbi, page))
#else
if (!f2fs_enable_inode_chksum(sbi, page) ||
PageDirty(page) || PageWriteback(page))
#endif
return true;
ri = &F2FS_NODE(page)->i;
@ -477,6 +481,10 @@ void f2fs_update_inode(struct inode *inode, struct page *node_page)
F2FS_I(inode)->i_disk_time[1] = timespec64_to_timespec(inode->i_ctime);
F2FS_I(inode)->i_disk_time[2] = timespec64_to_timespec(inode->i_mtime);
F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
#ifdef CONFIG_F2FS_CHECK_FS
f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
#endif
}
void f2fs_update_inode_page(struct inode *inode)

10
fs/f2fs/node.c
View File

@ -1141,8 +1141,12 @@ static int read_node_page(struct page *page, int op_flags)
.encrypted_page = NULL,
};
if (PageUptodate(page))
if (PageUptodate(page)) {
#ifdef CONFIG_F2FS_CHECK_FS
f2fs_bug_on(sbi, !f2fs_inode_chksum_verify(sbi, page));
#endif
return LOCKED_PAGE;
}
f2fs_get_node_info(sbi, page->index, &ni);
@ -1775,6 +1779,10 @@ static int f2fs_set_node_page_dirty(struct page *page)
if (!PageUptodate(page))
SetPageUptodate(page);
#ifdef CONFIG_F2FS_CHECK_FS
if (IS_INODE(page))
f2fs_inode_chksum_set(F2FS_P_SB(page), page);
#endif
if (!PageDirty(page)) {
__set_page_dirty_nobuffers(page);
inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES);

4
fs/f2fs/node.h
View File

@ -444,6 +444,10 @@ static inline void set_mark(struct page *page, int mark, int type)
else
flag &= ~(0x1 << type);
rn->footer.flag = cpu_to_le32(flag);
#ifdef CONFIG_F2FS_CHECK_FS
f2fs_inode_chksum_set(F2FS_P_SB(page), page);
#endif
}
#define set_dentry_mark(page, mark) set_mark(page, mark, DENT_BIT_SHIFT)
#define set_fsync_mark(page, mark) set_mark(page, mark, FSYNC_BIT_SHIFT)