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authorJaegeuk Kim <jaegeuk@kernel.org>2015-03-30 15:07:16 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2015-04-10 15:08:57 -0700
commit510022a85839a8409d1e6a519bb86ce71a84f30a (patch)
tree69c0d7bc575c378ee0de42ab03a29c349afb74dc /fs/f2fs/inline.c
parentc9ef481097d17fb8ff8ea7930ce715b5a676f10f (diff)
downloadlinux-510022a85839a8409d1e6a519bb86ce71a84f30a.tar.bz2
f2fs: add F2FS_INLINE_DOTS to recover missing dot dentries
If f2fs was corrupted with missing dot dentries, it needs to recover them after fsck.f2fs detection. The underlying precedure is: 1. The fsck.f2fs remains F2FS_INLINE_DOTS flag in directory inode, if it detects missing dot dentries. 2. When f2fs looks up the corrupted directory, it triggers f2fs_add_link with proper inode numbers and their dot and dotdot names. 3. Once f2fs recovers the directory without errors, it removes F2FS_INLINE_DOTS finally. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/inline.c')
-rw-r--r--fs/f2fs/inline.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index 8241a87046c3..8140e4f0e538 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -390,7 +390,7 @@ out:
}
int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name,
- struct inode *inode)
+ struct inode *inode, nid_t ino, umode_t mode)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
struct page *ipage;
@@ -400,7 +400,7 @@ int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name,
struct f2fs_inline_dentry *dentry_blk = NULL;
struct f2fs_dentry_ptr d;
int slots = GET_DENTRY_SLOTS(namelen);
- struct page *page;
+ struct page *page = NULL;
int err = 0;
ipage = get_node_page(sbi, dir->i_ino);
@@ -417,29 +417,34 @@ int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name,
goto out;
}
- down_write(&F2FS_I(inode)->i_sem);
- page = init_inode_metadata(inode, dir, name, ipage);
- if (IS_ERR(page)) {
- err = PTR_ERR(page);
- goto fail;
+ if (inode) {
+ down_write(&F2FS_I(inode)->i_sem);
+ page = init_inode_metadata(inode, dir, name, ipage);
+ if (IS_ERR(page)) {
+ err = PTR_ERR(page);
+ goto fail;
+ }
}
f2fs_wait_on_page_writeback(ipage, NODE);
name_hash = f2fs_dentry_hash(name);
make_dentry_ptr(&d, (void *)dentry_blk, 2);
- f2fs_update_dentry(inode, &d, name, name_hash, bit_pos);
+ f2fs_update_dentry(ino, mode, &d, name, name_hash, bit_pos);
set_page_dirty(ipage);
/* we don't need to mark_inode_dirty now */
- F2FS_I(inode)->i_pino = dir->i_ino;
- update_inode(inode, page);
- f2fs_put_page(page, 1);
+ if (inode) {
+ F2FS_I(inode)->i_pino = dir->i_ino;
+ update_inode(inode, page);
+ f2fs_put_page(page, 1);
+ }
update_parent_metadata(dir, inode, 0);
fail:
- up_write(&F2FS_I(inode)->i_sem);
+ if (inode)
+ up_write(&F2FS_I(inode)->i_sem);
if (is_inode_flag_set(F2FS_I(dir), FI_UPDATE_DIR)) {
update_inode(dir, ipage);