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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-05-14 00:35:14 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-06-02 02:20:54 +0300 |
| commit | 06e1bc05cad8d06860b52c79d4669483c7e39a4f (patch) | |
| tree | 0f2477b99923f231c45205d5d444baa122a1b8fb /fs/f2fs/super.c | |
| parent | 912a83b5096eb4a5d8d95124d70585e0e861c564 (diff) | |
| download | linux-06e1bc05cad8d06860b52c79d4669483c7e39a4f.tar.xz | |
f2fs: truncate data blocks for orphan inode
As Hu reported, F2FS has a space leak problem, when conducting:
1) format a 4GB f2fs partition
2) dd a 3G file,
3) unlink it.
So, when doing f2fs_drop_inode(), we need to truncate data blocks
before skipping it.
We can also drop unused caches assigned to each inode.
Reported-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/super.c')
| -rw-r--r-- | fs/f2fs/super.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index d5dfd143c394..bfc900e87fcc 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -431,8 +431,30 @@ static int f2fs_drop_inode(struct inode *inode) * - f2fs_gc -> iput -> evict * - inode_wait_for_writeback(inode) */ - if (!inode_unhashed(inode) && inode->i_state & I_SYNC) + if (!inode_unhashed(inode) && inode->i_state & I_SYNC) { + if (!inode->i_nlink && !is_bad_inode(inode)) { + spin_unlock(&inode->i_lock); + + /* some remained atomic pages should discarded */ + if (f2fs_is_atomic_file(inode)) + commit_inmem_pages(inode, true); + + sb_start_intwrite(inode->i_sb); + i_size_write(inode, 0); + + if (F2FS_HAS_BLOCKS(inode)) + f2fs_truncate(inode); + + sb_end_intwrite(inode->i_sb); + +#ifdef CONFIG_F2FS_FS_ENCRYPTION + if (F2FS_I(inode)->i_crypt_info) + f2fs_free_encryption_info(inode); +#endif + spin_lock(&inode->i_lock); + } return 0; + } return generic_drop_inode(inode); } |