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f2fs: factor out a f2fs_map_no_dnode 

Factor out a helper to return a hole when no dnode was found.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Christoph Hellwig 2022-11-28 10:15:22 +01:00 committed by Jaegeuk Kim
parent 0094e98bd1
commit 817c968b79
1 changed files with 24 additions and 23 deletions
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47
fs/f2fs/data.c
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@ -1472,6 +1472,28 @@ int f2fs_get_block_locked(struct dnode_of_data *dn, pgoff_t index)
return err;
}
static int f2fs_map_no_dnode(struct inode *inode,
struct f2fs_map_blocks *map, struct dnode_of_data *dn,
pgoff_t pgoff)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
/*
* There is one exceptional case that read_node_page() may return
* -ENOENT due to filesystem has been shutdown or cp_error, return
* -EIO in that case.
*/
if (map->m_may_create &&
(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) || f2fs_cp_error(sbi)))
return -EIO;
if (map->m_next_pgofs)
*map->m_next_pgofs = f2fs_get_next_page_offset(dn, pgoff);
if (map->m_next_extent)
*map->m_next_extent = f2fs_get_next_page_offset(dn, pgoff);
return 0;
}
static bool f2fs_map_blocks_cached(struct inode *inode,
struct f2fs_map_blocks *map, int flag)
{
@ -1553,29 +1575,8 @@ next_dnode:
if (err) {
if (flag == F2FS_GET_BLOCK_BMAP)
map->m_pblk = 0;
if (err == -ENOENT) {
/*
* There is one exceptional case that read_node_page()
* may return -ENOENT due to filesystem has been
* shutdown or cp_error, so force to convert error
* number to EIO for such case.
*/
if (map->m_may_create &&
(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN) ||
f2fs_cp_error(sbi))) {
err = -EIO;
goto unlock_out;
}
err = 0;
if (map->m_next_pgofs)
*map->m_next_pgofs =
f2fs_get_next_page_offset(&dn, pgofs);
if (map->m_next_extent)
*map->m_next_extent =
f2fs_get_next_page_offset(&dn, pgofs);
}
if (err == -ENOENT)
err = f2fs_map_no_dnode(inode, map, &dn, pgofs);
goto unlock_out;
}