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ext2: propagate errors from ext2_prepare_chunk

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Propagate errors from ext2_prepare_chunk to the callers and handle them
there.  While touching the prototype also turn update_times into a bool
from the current int used as bool.

[JK: fixed up error recovery path in ext2_rename()]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Message-Id: <20230116085205.2342975-1-hch@lst.de>
This commit is contained in:
Christoph Hellwig 2023-01-16 09:52:05 +01:00 committed by Jan Kara
parent 1fb40763a5
commit 7a5fa171a2
3 changed files with 24 additions and 17 deletions
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13
fs/ext2/dir.c
View file

@ -461,9 +461,9 @@ static int ext2_handle_dirsync(struct inode *dir)
return err;
}
void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
struct page *page, void *page_addr, struct inode *inode,
int update_times)
int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
struct page *page, void *page_addr, struct inode *inode,
bool update_times)
{
loff_t pos = page_offset(page) +
(char *) de - (char *) page_addr;
@ -472,7 +472,10 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
lock_page(page);
err = ext2_prepare_chunk(page, pos, len);
BUG_ON(err);
if (err) {
unlock_page(page);
return err;
}
de->inode = cpu_to_le32(inode->i_ino);
ext2_set_de_type(de, inode);
ext2_commit_chunk(page, pos, len);
@ -480,7 +483,7 @@ void ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
dir->i_mtime = dir->i_ctime = current_time(dir);
EXT2_I(dir)->i_flags &= ~EXT2_BTREE_FL;
mark_inode_dirty(dir);
ext2_handle_dirsync(dir);
return ext2_handle_dirsync(dir);
}
/*

5
fs/ext2/ext2.h
View file

@ -734,8 +734,9 @@ extern int ext2_delete_entry(struct ext2_dir_entry_2 *dir, struct page *page,
char *kaddr);
extern int ext2_empty_dir (struct inode *);
extern struct ext2_dir_entry_2 *ext2_dotdot(struct inode *dir, struct page **p, void **pa);
extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, void *,
struct inode *, int);
int ext2_set_link(struct inode *dir, struct ext2_dir_entry_2 *de,
struct page *page, void *page_addr, struct inode *inode,
bool update_times);
static inline void ext2_put_page(struct page *page, void *page_addr)
{
kunmap_local(page_addr);

23
fs/ext2/namei.c
View file

@ -370,8 +370,11 @@ static int ext2_rename (struct user_namespace * mnt_userns,
err = PTR_ERR(new_de);
goto out_dir;
}
ext2_set_link(new_dir, new_de, new_page, page_addr, old_inode, 1);
err = ext2_set_link(new_dir, new_de, new_page, page_addr,
old_inode, true);
ext2_put_page(new_page, page_addr);
if (err)
goto out_dir;
new_inode->i_ctime = current_time(new_inode);
if (dir_de)
drop_nlink(new_inode);
@ -394,24 +397,24 @@ static int ext2_rename (struct user_namespace * mnt_userns,
ext2_delete_entry(old_de, old_page, old_page_addr);
if (dir_de) {
if (old_dir != new_dir)
ext2_set_link(old_inode, dir_de, dir_page,
dir_page_addr, new_dir, 0);
if (old_dir != new_dir) {
err = ext2_set_link(old_inode, dir_de, dir_page,
dir_page_addr, new_dir, false);
}
ext2_put_page(dir_page, dir_page_addr);
inode_dec_link_count(old_dir);
}
ext2_put_page(old_page, old_page_addr);
return 0;
out_dir:
if (dir_de)
ext2_put_page(dir_page, dir_page_addr);
out_old:
ext2_put_page(old_page, old_page_addr);
out:
return err;
out_dir:
if (dir_de)
ext2_put_page(dir_page, dir_page_addr);
goto out_old;
}
const struct inode_operations ext2_dir_inode_operations = {