diff options
author | jeff <jeff@FreeBSD.org> | 2002-05-14 21:59:49 +0000 |
---|---|---|
committer | jeff <jeff@FreeBSD.org> | 2002-05-14 21:59:49 +0000 |
commit | ba85b0e0876ba455ffad3b69fb7d4a4c3c95efab (patch) | |
tree | b464fde9cb43bdc4495f2a53cd53f5c45ffdf630 /sys | |
parent | c751ff18aef112284149dc542ec302d978eadf68 (diff) | |
download | FreeBSD-src-ba85b0e0876ba455ffad3b69fb7d4a4c3c95efab.zip FreeBSD-src-ba85b0e0876ba455ffad3b69fb7d4a4c3c95efab.tar.gz |
Disable the shared locking namei() code for now. It breaks several stacking
filesystems. This is on hold until the rest of VFS Locking is reviewed and
deemed safe. It can be enabled with 'options LOOKUP_SHARED'.
Diffstat (limited to 'sys')
-rw-r--r-- | sys/conf/options | 2 | ||||
-rw-r--r-- | sys/kern/vfs_cache.c | 8 | ||||
-rw-r--r-- | sys/kern/vfs_extattr.c | 2 | ||||
-rw-r--r-- | sys/kern/vfs_syscalls.c | 2 | ||||
-rw-r--r-- | sys/kern/vfs_vnops.c | 10 |
5 files changed, 12 insertions, 12 deletions
diff --git a/sys/conf/options b/sys/conf/options index dc617f3..2998468 100644 --- a/sys/conf/options +++ b/sys/conf/options @@ -389,7 +389,7 @@ BLKDEV_IOSIZE opt_global.h DEBUG opt_global.h DEBUG_LOCKS opt_global.h DEBUG_VFS_LOCKS opt_global.h -LOOKUP_EXCLUSIVE opt_global.h +LOOKUP_SHARED opt_global.h DIAGNOSTIC opt_global.h ENABLE_VFS_IOOPT opt_global.h INVARIANT_SUPPORT opt_global.h diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c index 49bd83f..6fd537f 100644 --- a/sys/kern/vfs_cache.c +++ b/sys/kern/vfs_cache.c @@ -566,7 +566,7 @@ vfs_cache_lookup(ap) error = cache_lookup(dvp, vpp, cnp); -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED if (!error) { /* We do this because the rest of the system now expects to get * a shared lock, which is later upgraded if LOCKSHARED is not @@ -608,7 +608,7 @@ vfs_cache_lookup(ap) } else if (flags & ISDOTDOT) { VOP_UNLOCK(dvp, 0, td); cnp->cn_flags |= PDIRUNLOCK; -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED if ((flags & ISLASTCN) && (flags & LOCKSHARED)) error = vget(vp, LK_SHARED, td); else @@ -622,7 +622,7 @@ vfs_cache_lookup(ap) cnp->cn_flags &= ~PDIRUNLOCK; } } else { -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED if ((flags & ISLASTCN) && (flags & LOCKSHARED)) error = vget(vp, LK_SHARED, td); else @@ -654,7 +654,7 @@ vfs_cache_lookup(ap) return (error); cnp->cn_flags &= ~PDIRUNLOCK; } -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED error = VOP_CACHEDLOOKUP(dvp, vpp, cnp); if (!error) { diff --git a/sys/kern/vfs_extattr.c b/sys/kern/vfs_extattr.c index f256e9e..44dec6d 100644 --- a/sys/kern/vfs_extattr.c +++ b/sys/kern/vfs_extattr.c @@ -2585,7 +2585,7 @@ stat(td, uap) int error; struct nameidata nd; -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | NOOBJ, UIO_USERSPACE, SCARG(uap, path), td); #else diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c index f256e9e..44dec6d 100644 --- a/sys/kern/vfs_syscalls.c +++ b/sys/kern/vfs_syscalls.c @@ -2585,7 +2585,7 @@ stat(td, uap) int error; struct nameidata nd; -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED NDINIT(&nd, LOOKUP, FOLLOW | LOCKSHARED | LOCKLEAF | NOOBJ, UIO_USERSPACE, SCARG(uap, path), td); #else diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c index d2d735d..64e26be 100644 --- a/sys/kern/vfs_vnops.c +++ b/sys/kern/vfs_vnops.c @@ -106,7 +106,7 @@ vn_open_cred(ndp, flagp, cmode, cred) struct vattr vat; struct vattr *vap = &vat; int mode, fmode, error; -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED int exclusive; /* The current intended lock state */ exclusive = 0; @@ -149,7 +149,7 @@ restart: ASSERT_VOP_LOCKED(ndp->ni_vp, "create"); fmode &= ~O_TRUNC; vp = ndp->ni_vp; -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED exclusive = 1; #endif } else { @@ -167,7 +167,7 @@ restart: } } else { ndp->ni_cnd.cn_nameiop = LOOKUP; -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED ndp->ni_cnd.cn_flags = ((fmode & O_NOFOLLOW) ? NOFOLLOW : FOLLOW) | LOCKSHARED | LOCKLEAF; @@ -213,7 +213,7 @@ restart: * Make sure that a VM object is created for VMIO support. */ if (vn_canvmio(vp) == TRUE) { -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED int flock; if (!exclusive && VOP_GETVOBJECT(vp, NULL) != 0) @@ -236,7 +236,7 @@ restart: *flagp = fmode; return (error); } -#ifndef LOOKUP_EXCLUSIVE +#ifdef LOOKUP_SHARED flock = VOP_ISLOCKED(vp, td); if (!exclusive && flock == LK_EXCLUSIVE) VOP_LOCK(vp, LK_DOWNGRADE, td); |