Messages in this thread | | | Subject | Re: [RFC PATCH 1/2] ext4: Fix possible deadlock with local interrupts disabled and page-draining IPI | From | Nikolay Borisov <> | Date | Fri, 9 Oct 2015 10:26:08 +0300 |
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On 10/09/2015 10:19 AM, Hillf Danton wrote: >> @@ -109,8 +109,8 @@ static void ext4_finish_bio(struct bio *bio) >> if (bio->bi_error) >> buffer_io_error(bh); >> } while ((bh = bh->b_this_page) != head); >> - bit_spin_unlock(BH_Uptodate_Lock, &head->b_state); >> local_irq_restore(flags); > > What if it takes 100ms to unlock after IRQ restored?
I'm not sure I understand in what direction you are going? Care to elaborate?
>> + bit_spin_unlock(BH_Uptodate_Lock, &head->b_state); >> if (!under_io) { >> #ifdef CONFIG_EXT4_FS_ENCRYPTION >> if (ctx) >> -- >> 2.5.0 >
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