From: Chao Yu yuchao0@huawei.com
commit 63840695f68c20735df8861062343cf1faa3768d upstream.
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: Chao Yu yuchao0@huawei.com Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Signed-off-by: Ben Hutchings ben.hutchings@codethink.co.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/f2fs/xattr.c | 50 ++++++++++++++++++++++++-------------------------- 1 file changed, 24 insertions(+), 26 deletions(-)
--- a/fs/f2fs/xattr.c +++ b/fs/f2fs/xattr.c @@ -264,12 +264,31 @@ static int read_inline_xattr(struct inod 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; @@ -298,19 +317,9 @@ static int lookup_all_xattrs(struct inod
/* 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) @@ -335,7 +344,6 @@ 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; @@ -357,19 +365,9 @@ static int read_all_xattrs(struct inode
/* 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);