On Mon, 2008-06-02 at 09:19 +0900, Akira Fujita wrote: > Hi, > > > Mingming Cao wrote: > > percpu counter: update center counter when sum per-cpu counter > > > > From: Mingming cao <cmm@xxxxxxxxxx> > > > > Delayed allocation need to check free blocks at every write time. > > percpu_counter_read_positive() is not quit accurate > > but using percpu_counter_sum_positive() for every write > > frequently is quite expensive. > > I couldn't compile the latest ext4 patch qeueu. > > LD fs/ext3/ext3.o > LD fs/ext3/built-in.o > CC fs/ext4/balloc.o > fs/ext4/balloc.c: In function ‘ext4_has_free_blocks’: > fs/ext4/balloc.c:1629: error: implicit declaration of function ‘percpu_counter_sum_positive_set’ > > > > + percpu_counter_sum_positive_set(&sbi->s_freeblocks_counter); > > Maybe the above line which in percpucounter-add-sum-and-set-function.patch > is percpu_counter_sum_and_set(&sbi->s_freeblocks_couter). > oops. Updated patch queue, please check again. Mingming > Thanks, > Akira Fujita > -- > 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 -- 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
