Commit dfa13f39 authored Apr 29, 2009 by Joel Becker

ocfs2: Fix a missing credit when deleting from indexed directories.



The ocfs2 directory index updates two blocks when we remove an entry -
the dx root and the dx leaf.  OCFS2_DELETE_INODE_CREDITS was only
accounting for the dx leaf.  This shows up when ocfs2_delete_inode()
runs out of credits in jbd2_journal_dirty_metadata() at
"J_ASSERT_JH(jh, handle->h_buffer_credits > 0);".

The test that caught this was running dirop_file_racer from the
ocfs2-test suite with a 250-character filename PREFIX.  Run on a 512B
blocksize, it forces the orphan dir index to grow large enough to
trigger.

Signed-off-by: Joel Becker <joel.becker@oracle.com>

parent 7e31a966

fs/ocfs2/journal.h

+3 −2

Original line number	Diff line number	Diff line
		@@ -437,8 +437,9 @@ static inline int ocfs2_unlink_credits(struct super_block *sb)
		}

		/* dinode + orphan dir dinode + inode alloc dinode + orphan dir entry +
		* inode alloc group descriptor + orphan dir index leaf */
		#define OCFS2_DELETE_INODE_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 3)
		* inode alloc group descriptor + orphan dir index root +
		* orphan dir index leaf */
		#define OCFS2_DELETE_INODE_CREDITS (3 * OCFS2_INODE_UPDATE_CREDITS + 4)

		/* dinode update, old dir dinode update, new dir dinode update, old
		* dir dir entry, new dir dir entry, dir entry update for renaming