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Message-ID: <20200706102336.16955-1-yuchao0@huawei.com>
Date: Mon, 6 Jul 2020 18:23:36 +0800
From: Chao Yu <yuchao0@...wei.com>
To: <jaegeuk@...nel.org>
CC: <linux-f2fs-devel@...ts.sourceforge.net>,
<linux-kernel@...r.kernel.org>, <chao@...nel.org>,
Chao Yu <yuchao0@...wei.com>
Subject: [PATCH] f2fs: fix error path in do_recover_data()
- don't panic kernel if f2fs_get_node_page() fails in
f2fs_recover_inline_data() or f2fs_recover_inline_xattr();
- return error number of f2fs_truncate_blocks() to
f2fs_recover_inline_data()'s caller;
Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
fs/f2fs/f2fs.h | 4 ++--
fs/f2fs/inline.c | 19 ++++++++++++-------
fs/f2fs/node.c | 6 ++++--
fs/f2fs/recovery.c | 10 ++++++++--
4 files changed, 26 insertions(+), 13 deletions(-)
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b3905cbbf731..ef4babc96723 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -3345,7 +3345,7 @@ bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
-void f2fs_recover_inline_xattr(struct inode *inode, struct page *page);
+int f2fs_recover_inline_xattr(struct inode *inode, struct page *page);
int f2fs_recover_xattr_data(struct inode *inode, struct page *page);
int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
@@ -3820,7 +3820,7 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
int f2fs_convert_inline_inode(struct inode *inode);
int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry);
int f2fs_write_inline_data(struct inode *inode, struct page *page);
-bool f2fs_recover_inline_data(struct inode *inode, struct page *npage);
+int f2fs_recover_inline_data(struct inode *inode, struct page *npage);
struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
const struct f2fs_filename *fname,
struct page **res_page);
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index def4b8481883..102df444f623 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -254,7 +254,7 @@ int f2fs_write_inline_data(struct inode *inode, struct page *page)
return 0;
}
-bool f2fs_recover_inline_data(struct inode *inode, struct page *npage)
+int f2fs_recover_inline_data(struct inode *inode, struct page *npage)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
struct f2fs_inode *ri = NULL;
@@ -276,7 +276,8 @@ bool f2fs_recover_inline_data(struct inode *inode, struct page *npage)
ri && (ri->i_inline & F2FS_INLINE_DATA)) {
process_inline:
ipage = f2fs_get_node_page(sbi, inode->i_ino);
- f2fs_bug_on(sbi, IS_ERR(ipage));
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
f2fs_wait_on_page_writeback(ipage, NODE, true, true);
@@ -289,21 +290,25 @@ bool f2fs_recover_inline_data(struct inode *inode, struct page *npage)
set_page_dirty(ipage);
f2fs_put_page(ipage, 1);
- return true;
+ return 1;
}
if (f2fs_has_inline_data(inode)) {
ipage = f2fs_get_node_page(sbi, inode->i_ino);
- f2fs_bug_on(sbi, IS_ERR(ipage));
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
f2fs_truncate_inline_inode(inode, ipage, 0);
clear_inode_flag(inode, FI_INLINE_DATA);
f2fs_put_page(ipage, 1);
} else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
- if (f2fs_truncate_blocks(inode, 0, false))
- return false;
+ int ret;
+
+ ret = f2fs_truncate_blocks(inode, 0, false);
+ if (ret)
+ return ret;
goto process_inline;
}
- return false;
+ return 0;
}
struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 6551d5e35c05..85ebdd0e3e7c 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -2572,7 +2572,7 @@ int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink)
return nr - nr_shrink;
}
-void f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
+int f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
{
void *src_addr, *dst_addr;
size_t inline_size;
@@ -2580,7 +2580,8 @@ void f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
struct f2fs_inode *ri;
ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
- f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage));
+ if (IS_ERR(ipage))
+ return PTR_ERR(ipage);
ri = F2FS_INODE(page);
if (ri->i_inline & F2FS_INLINE_XATTR) {
@@ -2599,6 +2600,7 @@ void f2fs_recover_inline_xattr(struct inode *inode, struct page *page)
update_inode:
f2fs_update_inode(inode, ipage);
f2fs_put_page(ipage, 1);
+ return 0;
}
int f2fs_recover_xattr_data(struct inode *inode, struct page *page)
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c
index af974ba273b3..4f12ade6410a 100644
--- a/fs/f2fs/recovery.c
+++ b/fs/f2fs/recovery.c
@@ -544,7 +544,9 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
/* step 1: recover xattr */
if (IS_INODE(page)) {
- f2fs_recover_inline_xattr(inode, page);
+ err = f2fs_recover_inline_xattr(inode, page);
+ if (err)
+ goto out;
} else if (f2fs_has_xattr_block(ofs_of_node(page))) {
err = f2fs_recover_xattr_data(inode, page);
if (!err)
@@ -553,8 +555,12 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode,
}
/* step 2: recover inline data */
- if (f2fs_recover_inline_data(inode, page))
+ err = f2fs_recover_inline_data(inode, page);
+ if (err) {
+ if (err == 1)
+ err = 0;
goto out;
+ }
/* step 3: recover data indices */
start = f2fs_start_bidx_of_node(ofs_of_node(page), inode);
--
2.26.2
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