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authorChao Yu <yuchao0@huawei.com>2017-09-04 18:58:03 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2017-10-10 12:49:52 -0700
commit63840695f68c20735df8861062343cf1faa3768d (patch)
tree4984ecfe445f8486a237ae6e76f13a1fbe86348b /fs/f2fs/xattr.c
parenta5f433f7410530ae6bb907ebc049547d9dce665b (diff)
downloadlinux-63840695f68c20735df8861062343cf1faa3768d.tar.bz2
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: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/xattr.c')
-rw-r--r--fs/f2fs/xattr.c50
1 files changed, 24 insertions, 26 deletions
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index a83451577ebc..7695654726eb 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -264,12 +264,31 @@ 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;
@@ -298,19 +317,9 @@ 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)
@@ -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 *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);