On Wed, 2009-09-09 at 19:29 -0400, Theodore Tso wrote: > On Wed, Sep 09, 2009 at 10:51:46PM +0800, Wu Fengguang wrote: > > + * The maximum number of pages to writeout in a single periodic/background > > + * writeback operation. 64MB means I_SYNC may be hold for up to 1 second. > > + * This is not a big problem since we normally do kind of trylock on I_SYNC > > + * for non-data-integrity writes. Userspace tasks doing throttled writeback > > + * do not use this value. > > What's your justification for using 64MB? Where are you getting 1 > second from? On a fast RAID array 64MB can be written in much less > than 1 second. Worse, on my 5mb/s usb stick writing out 64m will take forever. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
