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f2fs: add the truncate_xattr_node function

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The truncate_xattr_node function will be used by inline xattr.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2013-08-14 20:40:06 +09:00
parent dd9cfe236f
commit 4f16fb0f9b
2 changed files with 29 additions and 11 deletions
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1
fs/f2fs/f2fs.h
View File

@ -1016,6 +1016,7 @@ int is_checkpointed_node(struct f2fs_sb_info *, nid_t);
void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int);
int truncate_inode_blocks(struct inode *, pgoff_t); int truncate_inode_blocks(struct inode *, pgoff_t);
int truncate_xattr_node(struct inode *, struct page *);
int remove_inode_page(struct inode *); int remove_inode_page(struct inode *);
struct page *new_inode_page(struct inode *, const struct qstr *); struct page *new_inode_page(struct inode *, const struct qstr *);
struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *);

39
fs/f2fs/node.c
View File

@ -772,6 +772,29 @@ int truncate_inode_blocks(struct inode *inode, pgoff_t from)
return err > 0 ? 0 : err; return err > 0 ? 0 : err;
} }
int truncate_xattr_node(struct inode *inode, struct page *page)
{
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
nid_t nid = F2FS_I(inode)->i_xattr_nid;
struct dnode_of_data dn;
struct page *npage;
if (!nid)
return 0;
npage = get_node_page(sbi, nid);
if (IS_ERR(npage))
return PTR_ERR(npage);
F2FS_I(inode)->i_xattr_nid = 0;
set_new_dnode(&dn, inode, page, npage, nid);
if (page)
dn.inode_page_locked = 1;
truncate_node(&dn);
return 0;
}
/* /*
* Caller should grab and release a mutex by calling mutex_lock_op() and * Caller should grab and release a mutex by calling mutex_lock_op() and
* mutex_unlock_op(). * mutex_unlock_op().
@ -782,22 +805,16 @@ int remove_inode_page(struct inode *inode)
struct page *page; struct page *page;
nid_t ino = inode->i_ino; nid_t ino = inode->i_ino;
struct dnode_of_data dn; struct dnode_of_data dn;
int err;
page = get_node_page(sbi, ino); page = get_node_page(sbi, ino);
if (IS_ERR(page)) if (IS_ERR(page))
return PTR_ERR(page); return PTR_ERR(page);
if (F2FS_I(inode)->i_xattr_nid) { err = truncate_xattr_node(inode, page);
nid_t nid = F2FS_I(inode)->i_xattr_nid; if (err) {
struct page *npage = get_node_page(sbi, nid); f2fs_put_page(page, 1);
return err;
if (IS_ERR(npage))
return PTR_ERR(npage);
F2FS_I(inode)->i_xattr_nid = 0;
set_new_dnode(&dn, inode, page, npage, nid);
dn.inode_page_locked = 1;
truncate_node(&dn);
} }
/* 0 is possible, after f2fs_new_inode() is failed */ /* 0 is possible, after f2fs_new_inode() is failed */