Date: Sat, 21 Nov 2015 00:15:41 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r291117 - head/sys/fs/nfsclient Message-ID: <201511210015.tAL0Ffus077359@repo.freebsd.org>
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Author: rmacklem Date: Sat Nov 21 00:15:41 2015 New Revision: 291117 URL: https://svnweb.freebsd.org/changeset/base/291117 Log: Revert r283330 since it broke directory caching in the client. At this time I cannot see a way to fix directory caching when it has partial blocks in the buffer cache, due to the fact that the syscall's uio_offset won't stay the same as the lblkno * NFS_DIRBLKSIZ offset. Reported by: bde MFC after: 2 weeks Modified: head/sys/fs/nfsclient/nfs_clrpcops.c Modified: head/sys/fs/nfsclient/nfs_clrpcops.c ============================================================================== --- head/sys/fs/nfsclient/nfs_clrpcops.c Fri Nov 20 23:52:27 2015 (r291116) +++ head/sys/fs/nfsclient/nfs_clrpcops.c Sat Nov 21 00:15:41 2015 (r291117) @@ -3089,6 +3089,25 @@ nfsrpc_readdir(vnode_t vp, struct uio *u *eofp = eof; } + /* + * Add extra empty records to any remaining DIRBLKSIZ chunks. + */ + while (uio_uio_resid(uiop) > 0 && ((size_t)(uio_uio_resid(uiop))) != tresid) { + dp = (struct dirent *) CAST_DOWN(caddr_t, uio_iov_base(uiop)); + dp->d_type = DT_UNKNOWN; + dp->d_fileno = 0; + dp->d_namlen = 0; + dp->d_name[0] = '\0'; + tl = (u_int32_t *)&dp->d_name[4]; + *tl++ = cookie.lval[0]; + *tl = cookie.lval[1]; + dp->d_reclen = DIRBLKSIZ; + uio_iov_base_add(uiop, DIRBLKSIZ); + uio_iov_len_add(uiop, -(DIRBLKSIZ)); + uio_uio_resid_add(uiop, -(DIRBLKSIZ)); + uiop->uio_offset += DIRBLKSIZ; + } + nfsmout: if (nd->nd_mrep != NULL) mbuf_freem(nd->nd_mrep); @@ -3563,6 +3582,25 @@ nfsrpc_readdirplus(vnode_t vp, struct ui *eofp = eof; } + /* + * Add extra empty records to any remaining DIRBLKSIZ chunks. + */ + while (uio_uio_resid(uiop) > 0 && uio_uio_resid(uiop) != tresid) { + dp = (struct dirent *)uio_iov_base(uiop); + dp->d_type = DT_UNKNOWN; + dp->d_fileno = 0; + dp->d_namlen = 0; + dp->d_name[0] = '\0'; + tl = (u_int32_t *)&dp->d_name[4]; + *tl++ = cookie.lval[0]; + *tl = cookie.lval[1]; + dp->d_reclen = DIRBLKSIZ; + uio_iov_base_add(uiop, DIRBLKSIZ); + uio_iov_len_add(uiop, -(DIRBLKSIZ)); + uio_uio_resid_add(uiop, -(DIRBLKSIZ)); + uiop->uio_offset += DIRBLKSIZ; + } + nfsmout: if (nd->nd_mrep != NULL) mbuf_freem(nd->nd_mrep);
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