f2fs: fix to give correct parent inode number for roll forward
When we recover fsync'ed data after power-off-recovery, we should guarantee
that any parent inode number should be correct for each direct inode blocks.
So, let's make the following rules.
- The fsync should do checkpoint to all the inodes that were experienced hard
links.
- So, the only normal files can be recovered by roll-forward.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index d65fcad..e031f57 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -103,23 +103,6 @@
.remap_pages = generic_file_remap_pages,
};
-static int need_to_sync_dir(struct f2fs_sb_info *sbi, struct inode *inode)
-{
- struct dentry *dentry;
- nid_t pino;
-
- inode = igrab(inode);
- dentry = d_find_any_alias(inode);
- if (!dentry) {
- iput(inode);
- return 0;
- }
- pino = dentry->d_parent->d_inode->i_ino;
- dput(dentry);
- iput(inode);
- return !is_checkpointed_node(sbi, pino);
-}
-
int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
{
struct inode *inode = file->f_mapping->host;
@@ -149,17 +132,16 @@
if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
need_cp = true;
- else if (is_inode_flag_set(F2FS_I(inode), FI_NEED_CP))
+ else if (is_cp_file(inode))
need_cp = true;
else if (!space_for_roll_forward(sbi))
need_cp = true;
- else if (need_to_sync_dir(sbi, inode))
+ else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
need_cp = true;
if (need_cp) {
/* all the dirty node pages should be flushed for POR */
ret = f2fs_sync_fs(inode->i_sb, 1);
- clear_inode_flag(F2FS_I(inode), FI_NEED_CP);
} else {
/* if there is no written node page, write its inode page */
while (!sync_node_pages(sbi, inode->i_ino, &wbc)) {