[PATCH 4/4] f2fs: call f2fs_unlock_op after error was handled

Jaegeuk Kim
2014-09-26T04:55:00Z

This patch relocates f2fs_unlock_op in every directory operations to be called
after any error was processed.
Otherwise, the checkpoint can be entered with valid node ids without its
dentry when -ENOSPC is occurred.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/f2fs.h | 1 +
fs/f2fs/inode.c | 23 +++++++++++++++++++++++
fs/f2fs/namei.c | 32 +++++++++++---------------------
3 files changed, 35 insertions(+), 21 deletions(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 802ebf3..fc66d1b 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -1208,6 +1208,7 @@ void update_inode(struct inode *, struct page *);
void update_inode_page(struct inode *);
int f2fs_write_inode(struct inode *, struct writeback_control *);
void f2fs_evict_inode(struct inode *);
+void handle_failed_inode(struct inode *);

/*
* namei.c
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 62c5284..002036b 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -310,3 +310,26 @@ no_delete:
out_clear:
clear_inode(inode);
}
+
+/* caller should call f2fs_lock_op() */
+void handle_failed_inode(struct inode *inode)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+
+ clear_nlink(inode);
+ make_bad_inode(inode);
+ unlock_new_inode(inode);
+
+ i_size_write(inode, 0);
+ if (F2FS_HAS_BLOCKS(inode))
+ f2fs_truncate(inode);
+
+ remove_inode_page(inode);
+ stat_dec_inline_inode(inode);
+
+ alloc_nid_failed(sbi, inode->i_ino);
+ f2fs_unlock_op(sbi);
+
+ /* iput will drop the inode object */
+ iput(inode);
+}
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index ba0779d..0d2526e 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -123,9 +123,9 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,

f2fs_lock_op(sbi);
err = f2fs_add_link(dentry, inode);
- f2fs_unlock_op(sbi);
if (err)
goto out;
+ f2fs_unlock_op(sbi);

alloc_nid_done(sbi, ino);

@@ -133,9 +133,7 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
unlock_new_inode(inode);
return 0;
out:
- clear_nlink(inode);
- iget_failed(inode);
- alloc_nid_failed(sbi, ino);
+ handle_failed_inode(inode);
return err;
}

@@ -154,15 +152,16 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
set_inode_flag(F2FS_I(inode), FI_INC_LINK);
f2fs_lock_op(sbi);
err = f2fs_add_link(dentry, inode);
- f2fs_unlock_op(sbi);
if (err)
goto out;
+ f2fs_unlock_op(sbi);

d_instantiate(dentry, inode);
return 0;
out:
clear_inode_flag(F2FS_I(inode), FI_INC_LINK);
iput(inode);
+ f2fs_unlock_op(sbi);
return err;
}

@@ -253,9 +252,9 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,

f2fs_lock_op(sbi);
err = f2fs_add_link(dentry, inode);
- f2fs_unlock_op(sbi);
if (err)
goto out;
+ f2fs_unlock_op(sbi);

err = page_symlink(inode, symname, symlen);
alloc_nid_done(sbi, inode->i_ino);
@@ -264,9 +263,7 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
unlock_new_inode(inode);
return err;
out:
- clear_nlink(inode);
- iget_failed(inode);
- alloc_nid_failed(sbi, inode->i_ino);
+ handle_failed_inode(inode);
return err;
}

@@ -290,9 +287,9 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
set_inode_flag(F2FS_I(inode), FI_INC_LINK);
f2fs_lock_op(sbi);
err = f2fs_add_link(dentry, inode);
- f2fs_unlock_op(sbi);
if (err)
goto out_fail;
+ f2fs_unlock_op(sbi);

alloc_nid_done(sbi, inode->i_ino);

@@ -303,9 +300,7 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)

out_fail:
clear_inode_flag(F2FS_I(inode), FI_INC_LINK);
- clear_nlink(inode);
- iget_failed(inode);
- alloc_nid_failed(sbi, inode->i_ino);
+ handle_failed_inode(inode);
return err;
}

@@ -338,18 +333,16 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,

f2fs_lock_op(sbi);
err = f2fs_add_link(dentry, inode);
- f2fs_unlock_op(sbi);
if (err)
goto out;
+ f2fs_unlock_op(sbi);

alloc_nid_done(sbi, inode->i_ino);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
return 0;
out:
- clear_nlink(inode);
- iget_failed(inode);
- alloc_nid_failed(sbi, inode->i_ino);
+ handle_failed_inode(inode);
return err;
}

@@ -677,10 +670,7 @@ static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
release_out:
release_orphan_inode(sbi);
out:
- f2fs_unlock_op(sbi);
- clear_nlink(inode);
- iget_failed(inode);
- alloc_nid_failed(sbi, inode->i_ino);
+ handle_failed_inode(inode);
return err;
}

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1.9.3 (Apple Git-50)