Justin Maggard <jmaggard10@xxxxxxxxx> writes: > On Thu, Dec 10, 2009 at 5:29 PM, Dmitry Monakhov <dmonakhov@xxxxxxxxxx> wrote: >> Justin Maggard <jmaggard10@xxxxxxxxx> writes: >>> I have a little more information to add. After noticing the recent >>> "Fix potential quota deadlock" patch on the mailing list, I figured it >>> would be worth a shot to try it without quotas enabled. This also >>> avoids the system hang. I tried applying that patch, but still had >>> the same symptoms using that kernel. So I'm seeing a consistent >>> system hang with ext4 when delalloc and quotas are enabled on an SMP >>> system. With either quotas or delalloc disabled, it doesn't hang. >>> Both enabled on a single processor system also doesn't hang. >> You also may try another patch >> "[PATCH] ext4: fix sleep inside spinlock issue aka #14739 V2" > > Yes, that patch looks like it did the trick. Thanks! Ohhh.. in fact i've to apologies my patch is wrong a little bit after i_block_reservation_lock was reacquired second time i_reserved_meta_blocks block's may be changed so we have to use add instead of assign - EXT4_I(inode)->i_reserved_meta_blocks = mdblocks; + EXT4_I(inode)->i_reserved_meta_blocks += md_needed; As result quota leak is possible on heavy SMP stress test. I've already send correct version. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
