On Wed, 21 Dec 2011 11:05:48 -0600 Dave Kleikamp <[email protected]> wrote:
> [ updated to remove now-obsolete comment in read_cache_page_gfp()] > > lockdep reports a deadlock in jfs because a special inode's rw semaphore > is taken recursively. The mapping's gfp mask is GFP_NOFS, but is not used > when __read_cache_page() calls add_to_page_cache_lru(). Well hang on, it's not just a lockdep splat. The kernel actually will deadlock if we reenter JFS via this GFP_KERNEL allocation attempt, yes? Was that GFP_NOFS allocation recently added to JFS? If not then we should backport this deadlock fix into -stable, no? ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev _______________________________________________ Jfs-discussion mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jfs-discussion
