tree 6fcf2cccb7e4d155dd663f10001efdb2a9d7daae
parent cbf0d27a131639f4f3e4faa94373c5c6f89f8f07
author Jan Kara <jack@suse.cz> 1126045149 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1126137474 -0700

[PATCH] Fix JBD race in t_forget list handling

Fix race between journal_commit_transaction() and other places as
journal_unmap_buffer() that are adding buffers to transaction's t_forget list.
 We have to protect against such places by holding j_list_lock even when
traversing the t_forget list.  The fact that other places can only add buffers
to the list makes the locking easier.  OTOH the lock ranking complicates the
stuff...

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>