Vladislav Bolkhovitin <vst@xxxxxxxx> writes: > Jeff Moyer, on 08/05/2010 10:45 PM wrote: >> Tejun Heo<tj@xxxxxxxxxx> writes: >> >>> Commit a82afdf (block: use the same failfast bits for bio and request) >>> moved BIO_RW_* bits around such that they match up with REQ_* bits. >>> Unfortunately, fs.h hard coded READ, WRITE, READA and SWRITE as 0, 1, >>> 2 and 3, and expected them to match with BIO_RW_* bits. READ/WRITE >>> didn't change but BIO_RW_AHEAD was moved to bit 4 instead of bit 1, >>> breaking READA and SWRITE. >>> >>> This patch updates READA and SWRITE such that they match the BIO_RW_* >>> bits again. A follow up patch will update the definitions to directly >>> use BIO_RW_* bits so that this kind of breakage won't happen again. >>> >>> Stable: The offending commit a82afdf was released with v2.6.32, so >>> this patch should be applied to all kernels since then but it must >>> _NOT_ be applied to kernels earlier than that. >> >> Would someone be so kind as to remind me how this problem manifests >> itself? I know I read this recently, but my memory and googling skills >> are both failing me. :( > > See http://lkml.org/lkml/2010/7/28/315 and link inside. Thanks a ton! -Jeff -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
