438abdb9c6
not to mention a compile-time warning about the critical function becoming unused, by replacing spec_bmap() with vop_stdbmap(). ntfs seems to have the same bug. The factor for converting specfs block numbers to physical block numbers is 1, but vop_stdbmap() uses the bogus factor btodb(ap->a_vp->v_mount->mnt_stat.f_iosize), which is 16 for ffs with the default block size of 8K. This factor is bogus even for vop_stdbmap() -- the correct factor is related to the filesystem blocksize which is not necessarily the same to the optimal i/o size. vop_stdbmap() was apparently cloned from nfs where these sizes happen to be the same. There may also be a problem with a_vp->v_mount being null. spec_bmap() still checks for this, but I think the checks in specfs are dead code which used to support block devices. |
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|---|---|---|
| .. | ||
| deadfs | ||
| fdesc | ||
| fifofs | ||
| nullfs | ||
| portal | ||
| procfs | ||
| specfs | ||
| umapfs | ||
| union | ||