On Mon, May 30 2016 at 9:34am -0400, Ming Lei <[email protected]> wrote:
> > Hi, > > Interests[1] have been shown in multipage bvecs, so this patchset > try to prepare for the support and do two things: > > 1) the 1st 4 patches use bvec iterator to implement iterate_bvec(), > then we can drop the non-standard way for iterating bvec, which > can be thought as a good cleanup for lib/iov_iter.c > > 2) remove BIO_MAX_SECTORS and makre BIO_MAX_SIZE as obsolete, and > now there is only one user for each. Once multipage bvecs is introduced, > one bio may hold lots of sectors, and we should always use sort of > BIO_MAX_VECS which should be introduced in future and is similiar > with current BIO_MAX_PAGES. > > The only functional change is iterate_bvec():lib/iov_iter.c > > xfstests(-a auto) over loop aio is run for ext4/xfs to verify > the change and no regression found with this patchset. > > V6: > - rebased on v4.7-rc1 > - add reviewed-by tag > - mark BIO_MAX_SIZE as obsolete instead of removing because > dm-tree adds one usage now Not sure what you're referring to here with "dm-tree" (since "dm-tree" doesn't exist). But only direct user of "BIO_MAX_SIZE" in DM appears to be dm-crypt.c. Maybe you've identified some indirect use of BIO_MAX_SIZE?
