search for: swab_pwrite

...err) { - return 0; + if (!is_aligned (count, offset)) return -1; + return nbdkit_extents_aligned (next_ops, nxdata, count, offset, flags, + bits/8, extents, err); } /* Cache. */ @@ -223,7 +223,7 @@ static struct nbdkit_filter filter = { .pwrite = swab_pwrite, .trim = swab_trim, .zero = swab_zero, - .can_extents = swab_can_extents, + .extents = swab_extents, .cache = swab_cache, }; -- 2.27.0

...gned (count, offset)) return -1; > + return nbdkit_extents_aligned (next_ops, nxdata, count, offset, flags, > + bits/8, extents, err); > } > > /* Cache. */ > @@ -223,7 +223,7 @@ static struct nbdkit_filter filter = { > .pwrite = swab_pwrite, > .trim = swab_trim, > .zero = swab_zero, > - .can_extents = swab_can_extents, > + .extents = swab_extents, > .cache = swab_cache, > }; > > -- > 2.27.0 > > ________________________________________...

Ultimately, both the blocksize and swab filters want to return aligned extents to the client. I'm posting this as a snapshot of my work in progress on how I plan to get there (it's not quite working yet, but I'm done for today and wanted to at least document my ideas). I might also add a convenience function for nbdkit_extents_offset, since we have a number of filters that repeat the