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f2fs: alloc new nids for xattr block in recovery

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recovery file A:			recovery file B:
	-get_dnode_of_data
		-alloc_nid
					-recover_xattr_data
						-set_node_addr(sbi, &ni, NEW_ADDR, false);
							--->bug_on for nid has been used by file A

In recovery process, new allocated node blocks may "reuse" xattr block
nids, this patch alloc new nids for xattr blocks in recovery process to
avoid this problem.

Signed-off-by: Yunlei He <heyunlei@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Yunlei He 2017-07-18 09:48:12 +08:00 committed by Jaegeuk Kim
parent 76a9dd85d4
commit 8790568255
1 changed files with 15 additions and 13 deletions
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28
fs/f2fs/node.c
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@ -19,6 +19,7 @@
#include "f2fs.h"
#include "node.h"
#include "segment.h"
#include "xattr.h"
#include "trace.h"
#include <trace/events/f2fs.h>
@ -2190,7 +2191,8 @@ int recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid;
nid_t new_xnid = nid_of_node(page);
nid_t new_xnid;
struct dnode_of_data dn;
struct node_info ni;
struct page *xpage;
@ -2206,22 +2208,22 @@ int recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr)
recover_xnid:
/* 2: update xattr nid in inode */
remove_free_nid(sbi, new_xnid);
f2fs_i_xnid_write(inode, new_xnid);
if (unlikely(inc_valid_node_count(sbi, inode, false)))
f2fs_bug_on(sbi, 1);
if (!alloc_nid(sbi, &new_xnid))
return -ENOSPC;
set_new_dnode(&dn, inode, NULL, NULL, new_xnid);
xpage = new_node_page(&dn, XATTR_NODE_OFFSET);
if (IS_ERR(xpage)) {
alloc_nid_failed(sbi, new_xnid);
return PTR_ERR(xpage);
}
alloc_nid_done(sbi, new_xnid);
update_inode_page(inode);
/* 3: update and set xattr node page dirty */
xpage = grab_cache_page(NODE_MAPPING(sbi), new_xnid);
if (!xpage)
return -ENOMEM;
memcpy(F2FS_NODE(xpage), F2FS_NODE(page), VALID_XATTR_BLOCK_SIZE);
memcpy(F2FS_NODE(xpage), F2FS_NODE(page), PAGE_SIZE);
get_node_info(sbi, new_xnid, &ni);
ni.ino = inode->i_ino;
set_node_addr(sbi, &ni, NEW_ADDR, false);
set_page_dirty(xpage);
f2fs_put_page(xpage, 1);