PERFORCE change 122478 for review
John Baldwin
jhb at freebsd.org
Sat Jun 30 00:54:17 UTC 2007
On Thursday 28 June 2007 07:50:10 am Roman Divacky wrote:
> http://perforce.freebsd.org/chv.cgi?CH=122478
>
> Change 122478 by rdivacky at rdivacky_witten on 2007/06/28 11:49:10
>
> Lock Giant in a case of non-MPSAFE fs. Put in some forgotten vrele(dvp)...
Please use the existing VFS_LOCK_GIANT() and VFS_UNLOCK_GIANT() macros.
> Affected files ...
>
> .. //depot/projects/soc2007/rdivacky/linux_at/sys/kern/vfs_syscalls.c#39
edit
>
> Differences ...
>
> ==== //depot/projects/soc2007/rdivacky/linux_at/sys/kern/vfs_syscalls.c#39
(text+ko) ====
>
> @@ -994,6 +994,8 @@
> *dvpp = NULL;
> return (ENOTDIR);
> }
> + if (VFS_NEEDSGIANT((*dvpp)->v_mount))
> + mtx_lock(&Giant);
> }
>
> return (0);
> @@ -1161,8 +1163,11 @@
> VFS_UNLOCK_GIANT(vfslocked);
> fdclose(fdp, fp, indx, td);
> fdrop(fp, td);
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -1266,8 +1271,11 @@
> if (error)
> return (error);
> restart:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> error = kern_get_at(td, fd, &dvp);
> if (error && !kern_absolute_path(path, pathseg))
> return (error);
> @@ -1345,8 +1353,11 @@
> vput(nd.ni_vp);
> }
> }
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> NDFREE(&nd, NDF_ONLY_PNBUF);
> vput(nd.ni_dvp);
> vn_finished_write(mp);
> @@ -1407,8 +1418,11 @@
>
> AUDIT_ARG(mode, mode);
> restart:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> error = kern_get_at(td, fd, &dvp);
> if (error && !kern_absolute_path(path, pathseg))
> return (error);
> @@ -1462,8 +1476,11 @@
> #ifdef MAC
> out:
> #endif
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> vput(nd.ni_dvp);
> vn_finished_write(mp);
> VFS_UNLOCK_GIANT(vfslocked);
> @@ -1584,7 +1601,10 @@
>
> error = kern_get_at(td, fd2, &ldvp);
> if (error && !kern_absolute_path(path2, segflg)) {
> - if (pdvp)
> + if (pdvp) {
> + if (VFS_NEEDSGIANT(pdvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> vrele(pdvp);
> return (error);
> }
> @@ -1641,10 +1661,16 @@
> VFS_UNLOCK_GIANT(vfslocked);
>
> out:
> - if (pdvp)
> + if (pdvp) {
> vrele(pdvp);
> - if (ldvp)
> + if (VFS_NEEDSGIANT(pdvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> + if (ldvp) {
> vrele(ldvp);
> + if (VFS_NEEDSGIANT(ldvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -1710,8 +1736,11 @@
> }
> AUDIT_ARG(text, syspath);
> restart:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> error = kern_get_at(td, fd, &dvp);
> if (error && !kern_absolute_path(path2, segflg))
> return (error);
> @@ -1763,8 +1792,11 @@
> vn_finished_write(mp);
> VFS_UNLOCK_GIANT(vfslocked);
> out:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> if (segflg != UIO_SYSSPACE)
> uma_zfree(namei_zone, syspath);
> return (error);
> @@ -1878,8 +1910,11 @@
> int vfslocked;
>
> restart:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> error = kern_get_at(td, fd, &dvp);
> if (error && !kern_absolute_path(path, pathseg))
> return (error);
> @@ -1936,8 +1971,11 @@
> }
> NDFREE(&nd, NDF_ONLY_PNBUF);
> vput(nd.ni_dvp);
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> if (vp == nd.ni_dvp)
> vrele(vp);
> else
> @@ -2189,8 +2227,11 @@
> out:
> td->td_ucred = cred;
> crfree(tmpcred);
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -2405,8 +2446,11 @@
> if (error == 0)
> *sbp = sb;
> out:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -2469,8 +2513,11 @@
> if (error == 0)
> *sbp = sb;
> out:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -2695,8 +2742,11 @@
> VFS_UNLOCK_GIANT(vfslocked);
> td->td_retval[0] = count - auio.uio_resid;
> out:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -2942,8 +2992,11 @@
> vrele(nd.ni_vp);
> VFS_UNLOCK_GIANT(vfslocked);
> out:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -2991,6 +3044,12 @@
> error = setfmode(td, nd.ni_vp, mode);
> vrele(nd.ni_vp);
> VFS_UNLOCK_GIANT(vfslocked);
> + if (dvp) {
> + vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> +
> return (error);
> }
>
> @@ -3132,8 +3191,11 @@
> vrele(nd.ni_vp);
> VFS_UNLOCK_GIANT(vfslocked);
> out:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -3190,8 +3252,11 @@
> vrele(nd.ni_vp);
> VFS_UNLOCK_GIANT(vfslocked);
> out:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -3377,8 +3442,11 @@
> vrele(nd.ni_vp);
> VFS_UNLOCK_GIANT(vfslocked);
> out:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -3766,7 +3834,10 @@
>
> error = kern_get_at(td, newfd, &todvp);
> if (error && !kern_absolute_path(new, pathseg)) {
> - if (frdvp)
> + if (frdvp) {
> + if (VFS_NEEDSGIANT(frdvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> vrele(frdvp);
> return (error);
> }
> @@ -3875,11 +3946,16 @@
> if (error == -1)
> return (0);
> out2:
> - if (frdvp)
> + if (frdvp) {
> vrele(frdvp);
> - if (todvp)
> + if (VFS_NEEDSGIANT(frdvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> + if (todvp) {
> vrele(todvp);
> -
> + if (VFS_NEEDSGIANT(todvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> return (error);
> }
>
> @@ -3936,8 +4012,11 @@
>
> AUDIT_ARG(mode, mode);
> restart:
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> error = kern_get_at(td, fd, &dvp);
> if (error && !kern_absolute_path(path, segflg))
> return (error);
> @@ -3996,8 +4075,11 @@
> #ifdef MAC
> out:
> #endif
> - if (dvp)
> + if (dvp) {
> vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> NDFREE(&nd, NDF_ONLY_PNBUF);
> vput(nd.ni_dvp);
> if (!error)
> @@ -4042,6 +4124,11 @@
> int vfslocked;
>
> restart:
> + if (dvp) {
> + vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> error = kern_get_at(td, fd, &dvp);
> if (error && !kern_absolute_path(path, pathseg))
> return (error);
> @@ -4095,6 +4182,11 @@
> out:
> NDFREE(&nd, NDF_ONLY_PNBUF);
> vput(vp);
> + if (dvp) {
> + vrele(dvp);
> + if (VFS_NEEDSGIANT(dvp->v_mount))
> + mtx_unlock(&Giant);
> + }
> if (nd.ni_dvp == vp)
> vrele(nd.ni_dvp);
> else
>
--
John Baldwin
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