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r16312 is not any longer real since many years (likely since when VFS

Browse Source 
received granular locking) but the comment present in UFS has been
copied all over other filesystems code incorrectly for several times.

Removes comments that makes no sense now.

Reviewed by:	kib
MFC after:	3 days
This commit is contained in:
Attilio Rao 2012-11-19 22:43:45 +00:00
parent 49f4a268d5
commit c6e0355cee
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=243311
9 changed files with 0 additions and 57 deletions
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8
sys/fs/ext2fs/ext2_vfsops.c
View File

@ -905,14 +905,6 @@ ext2_vget(struct mount *mp, ino_t ino, int flags, struct vnode **vpp)
ump = VFSTOEXT2(mp);
dev = ump->um_dev;
/*
* If this malloc() is performed after the getnewvnode()
* it might block, leaving a vnode with a NULL v_data to be
* found by ext2_sync() if a sync happens to fire right then,
* which will cause a panic because ext2_sync() blindly
* dereferences vp->v_data (as well it should).
*/
ip = malloc(sizeof(struct inode), M_EXT2NODE, M_WAITOK | M_ZERO);
/* Allocate a new vnode/inode. */

6
sys/fs/msdosfs/msdosfs_denode.c
View File

@ -142,12 +142,6 @@ deget(pmp, dirclust, diroffset, depp)
KASSERT((*depp)->de_diroffset == diroffset, ("wrong diroffset"));
return (0);
}
/*
* Do the malloc before the getnewvnode since doing so afterward
* might cause a bogus v_data pointer to get dereferenced
* elsewhere if malloc should block.
*/
ldep = malloc(sizeof(struct denode), M_MSDOSFSNODE, M_WAITOK | M_ZERO);
/*

6
sys/fs/nfsclient/nfs_clnode.c
View File

@ -122,12 +122,6 @@ ncl_nget(struct mount *mntp, u_int8_t *fhp, int fhsize, struct nfsnode **npp,
*npp = VTONFS(nvp);
return (0);
}
/*
* Allocate before getnewvnode since doing so afterward
* might cause a bogus v_data pointer to get dereferenced
* elsewhere if zalloc should block.
*/
np = uma_zalloc(newnfsnode_zone, M_WAITOK | M_ZERO);
error = getnewvnode("newnfs", mntp, &newnfs_vnodeops, &nvp);

6
sys/fs/nfsclient/nfs_clport.c
View File

@ -197,12 +197,6 @@ nfscl_nget(struct mount *mntp, struct vnode *dvp, struct nfsfh *nfhp,
FREE((caddr_t)nfhp, M_NFSFH);
return (0);
}
/*
* Allocate before getnewvnode since doing so afterward
* might cause a bogus v_data pointer to get dereferenced
* elsewhere if zalloc should block.
*/
np = uma_zalloc(newnfsnode_zone, M_WAITOK | M_ZERO);
error = getnewvnode("newnfs", mntp, &newnfs_vnodeops, &nvp);

4
sys/fs/nullfs/null_subr.c
View File

@ -236,10 +236,6 @@ null_nodeget(mp, lowervp, vpp)
* duplicates later, when adding new vnode to hash.
* Note that duplicate can only appear in hash if the lowervp is
* locked LK_SHARED.
*
* Do the MALLOC before the getnewvnode since doing so afterward
* might cause a bogus v_data pointer to get dereferenced
* elsewhere if MALLOC should block.
*/
xp = malloc(sizeof(struct null_node), M_NULLFSNODE, M_WAITOK);

6
sys/fs/unionfs/union_subr.c
View File

@ -247,12 +247,6 @@ unionfs_nodeget(struct mount *mp, struct vnode *uppervp,
if (dvp == NULLVP)
return (EINVAL);
}
/*
* Do the MALLOC before the getnewvnode since doing so afterward
* might cause a bogus v_data pointer to get dereferenced elsewhere
* if MALLOC should block.
*/
unp = malloc(sizeof(struct unionfs_node),
M_UNIONFSNODE, M_WAITOK | M_ZERO);

7
sys/gnu/fs/reiserfs/reiserfs_inode.c
View File

@ -757,13 +757,6 @@ reiserfs_iget(
rmp = VFSTOREISERFS(mp);
dev = rmp->rm_dev;
/*
* If this malloc() is performed after the getnewvnode() it might
* block, leaving a vnode with a NULL v_data to be found by
* reiserfs_sync() if a sync happens to fire right then, which
* will cause a panic because reiserfs_sync() blindly dereferences
* vp->v_data (as well it should).
*/
reiserfs_log(LOG_DEBUG, "malloc(struct reiserfs_node)\n");
ip = malloc(sizeof(struct reiserfs_node), M_REISERFSNODE,
M_WAITOK | M_ZERO);

6
sys/nfsclient/nfs_node.c
View File

@ -128,12 +128,6 @@ nfs_nget(struct mount *mntp, nfsfh_t *fhp, int fhsize, struct nfsnode **npp, int
*npp = VTONFS(nvp);
return (0);
}
/*
* Allocate before getnewvnode since doing so afterward
* might cause a bogus v_data pointer to get dereferenced
* elsewhere if zalloc should block.
*/
np = uma_zalloc(nfsnode_zone, M_WAITOK | M_ZERO);
error = getnewvnode("nfs", mntp, &nfs_vnodeops, &nvp);

8
sys/ufs/ffs/ffs_vfsops.c
View File

@ -1676,14 +1676,6 @@ ffs_vgetf(mp, ino, flags, vpp, ffs_flags)
ump = VFSTOUFS(mp);
dev = ump->um_dev;
fs = ump->um_fs;
/*
* If this malloc() is performed after the getnewvnode()
* it might block, leaving a vnode with a NULL v_data to be
* found by ffs_sync() if a sync happens to fire right then,
* which will cause a panic because ffs_sync() blindly
* dereferences vp->v_data (as well it should).
*/
ip = uma_zalloc(uma_inode, M_WAITOK | M_ZERO);
/* Allocate a new vnode/inode. */