ocfs2: fix journal commit deadlock in ocfs2_convert_inline_data_to_extents

Similar to ocfs2_write_end_nolock() which is metioned at commit
136f49b91710 ("ocfs2: fix journal commit deadlock"), we should unlock
pages before ocfs2_commit_trans() in ocfs2_convert_inline_data_to_extents.

Otherwise, it will cause a deadlock with journal commit threads.

Signed-off-by: Alex Chen <alex.chen@huawei.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index fcae9ef..044158b 100644 (file)
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -6873,7 +6873,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
        if (IS_ERR(handle)) {
                ret = PTR_ERR(handle);
                mlog_errno(ret);
-               goto out_unlock;
+               goto out;
        }
 
        ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh,
@@ -6931,7 +6931,7 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
                if (ret) {
                        mlog_errno(ret);
                        need_free = 1;
-                       goto out_commit;
+                       goto out_unlock;
                }
 
                page_end = PAGE_CACHE_SIZE;
@@ -6964,12 +6964,16 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
                if (ret) {
                        mlog_errno(ret);
                        need_free = 1;
-                       goto out_commit;
+                       goto out_unlock;
                }
 
                inode->i_blocks = ocfs2_inode_sector_count(inode);
        }
 
+out_unlock:
+       if (pages)
+               ocfs2_unlock_and_free_pages(pages, num_pages);
+
 out_commit:
        if (ret < 0 && did_quota)
                dquot_free_space_nodirty(inode,
@@ -6989,15 +6993,11 @@ out_commit:
 
        ocfs2_commit_trans(osb, handle);
 
-out_unlock:
+out:
        if (data_ac)
                ocfs2_free_alloc_context(data_ac);
-
-out:
-       if (pages) {
-               ocfs2_unlock_and_free_pages(pages, num_pages);
+       if (pages)
                kfree(pages);
-       }
 
        return ret;
 }