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Commit ca433f07 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: introduce read_xattr_block 



Commit ba38c27eb93e ("f2fs: enhance lookup xattr") introduces
lookup_all_xattrs duplicating from read_all_xattrs, which leaves
lots of similar codes in between them, so introduce new help
read_xattr_block to clean up redundant codes.

Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent e002c811

fs/f2fs/xattr.c

+24 −26
Original line number Diff line number Diff line
@@ -313,12 +313,31 @@ static int read_inline_xattr(struct inode *inode, struct page *ipage, 
	return 0;

}



static int read_xattr_block(struct inode *inode, void *txattr_addr)

{

	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

	nid_t xnid = F2FS_I(inode)->i_xattr_nid;

	unsigned int inline_size = inline_xattr_size(inode);

	struct page *xpage;

	void *xattr_addr;



	/* The inode already has an extended attribute block. */

	xpage = get_node_page(sbi, xnid);

	if (IS_ERR(xpage))

		return PTR_ERR(xpage);



	xattr_addr = page_address(xpage);

	memcpy(txattr_addr + inline_size, xattr_addr, VALID_XATTR_BLOCK_SIZE);

	f2fs_put_page(xpage, 1);



	return 0;

}



static int lookup_all_xattrs(struct inode *inode, struct page *ipage,

				unsigned int index, unsigned int len,

				const char *name, struct f2fs_xattr_entry **xe,

				void **base_addr)

{

	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

	void *cur_addr, *txattr_addr, *last_addr = NULL;

	nid_t xnid = F2FS_I(inode)->i_xattr_nid;

	unsigned int size = xnid ? VALID_XATTR_BLOCK_SIZE : 0;
@@ -347,21 +366,11 @@ static int lookup_all_xattrs(struct inode *inode, struct page *ipage, 


	/* read from xattr node block */

	if (xnid) {

		struct page *xpage;

		void *xattr_addr;



		/* The inode already has an extended attribute block. */

		xpage = get_node_page(sbi, xnid);

		if (IS_ERR(xpage)) {

			err = PTR_ERR(xpage);

		err = read_xattr_block(inode, txattr_addr);

		if (err)

			goto out;

	}



		xattr_addr = page_address(xpage);

		memcpy(txattr_addr + inline_size, xattr_addr, size);

		f2fs_put_page(xpage, 1);

	}



	if (last_addr)

		cur_addr = XATTR_HDR(last_addr) - 1;

	else
@@ -384,7 +393,6 @@ out: 
static int read_all_xattrs(struct inode *inode, struct page *ipage,

							void **base_addr)

{

	struct f2fs_sb_info *sbi = F2FS_I_SB(inode);

	struct f2fs_xattr_header *header;

	nid_t xnid = F2FS_I(inode)->i_xattr_nid;

	unsigned int size = VALID_XATTR_BLOCK_SIZE;
@@ -406,21 +414,11 @@ static int read_all_xattrs(struct inode *inode, struct page *ipage, 


	/* read from xattr node block */

	if (xnid) {

		struct page *xpage;

		void *xattr_addr;



		/* The inode already has an extended attribute block. */

		xpage = get_node_page(sbi, xnid);

		if (IS_ERR(xpage)) {

			err = PTR_ERR(xpage);

		err = read_xattr_block(inode, txattr_addr);

		if (err)

			goto fail;

	}



		xattr_addr = page_address(xpage);

		memcpy(txattr_addr + inline_size, xattr_addr, size);

		f2fs_put_page(xpage, 1);

	}



	header = XATTR_HDR(txattr_addr);



	/* never been allocated xattrs */