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NFS: Don't store NFS_INO_REVAL_FORCED

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NFS_INO_REVAL_FORCED is intended to tell us that the cache needs
revalidation despite the fact that we hold a delegation. We shouldn't
need to store it anymore, though.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2021-04-11 14:31:24 -04:00
parent 1301e421b7
commit cc7f2dae63
4 changed files with 43 additions and 52 deletions
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21
fs/nfs/delegation.c
View File

@ -481,6 +481,22 @@ int nfs_inode_set_delegation(struct inode *inode, const struct cred *cred,
if (freeme == NULL)
goto out;
add_new:
/*
* If we didn't revalidate the change attribute before setting
* the delegation, then pre-emptively ask for a full attribute
* cache revalidation.
*/
spin_lock(&inode->i_lock);
if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_CHANGE)
nfs_set_cache_invalid(inode,
NFS_INO_INVALID_ATIME | NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_MTIME | NFS_INO_INVALID_SIZE |
NFS_INO_INVALID_BLOCKS | NFS_INO_INVALID_NLINK |
NFS_INO_INVALID_OTHER | NFS_INO_INVALID_DATA |
NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL |
NFS_INO_INVALID_XATTR);
spin_unlock(&inode->i_lock);
list_add_tail_rcu(&delegation->super_list, &server->delegations);
rcu_assign_pointer(nfsi->delegation, delegation);
delegation = NULL;
@ -488,11 +504,6 @@ add_new:
atomic_long_inc(&nfs_active_delegations);
trace_nfs4_set_delegation(inode, type);
spin_lock(&inode->i_lock);
if (NFS_I(inode)->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME))
NFS_I(inode)->cache_validity |= NFS_INO_REVAL_FORCED;
spin_unlock(&inode->i_lock);
out:
spin_unlock(&clp->cl_lock);
if (delegation != NULL)

3
fs/nfs/delegation.h
View File

@ -84,8 +84,7 @@ int nfs4_inode_make_writeable(struct inode *inode);
static inline int nfs_have_delegated_attributes(struct inode *inode)
{
return NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) &&
!(NFS_I(inode)->cache_validity & NFS_INO_REVAL_FORCED);
return NFS_PROTO(inode)->have_delegation(inode, FMODE_READ);
}
#endif

66
fs/nfs/inode.c
View File

@ -200,21 +200,19 @@ void nfs_set_cache_invalid(struct inode *inode, unsigned long flags)
if (have_delegation) {
if (!(flags & NFS_INO_REVAL_FORCED))
flags &= ~(NFS_INO_INVALID_MODE |
NFS_INO_INVALID_OTHER);
flags &= ~(NFS_INO_INVALID_CHANGE
| NFS_INO_INVALID_SIZE
| NFS_INO_INVALID_XATTR);
NFS_INO_INVALID_OTHER |
NFS_INO_INVALID_XATTR);
flags &= ~(NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_SIZE);
} else if (flags & NFS_INO_REVAL_PAGECACHE)
flags |= NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_SIZE;
flags &= ~NFS_INO_REVAL_PAGECACHE;
if (!nfs_has_xattr_cache(nfsi))
flags &= ~NFS_INO_INVALID_XATTR;
if (flags & NFS_INO_INVALID_DATA)
nfs_fscache_invalidate(inode);
if (inode->i_mapping->nrpages == 0)
flags &= ~(NFS_INO_INVALID_DATA|NFS_INO_DATA_INVAL_DEFER);
flags &= ~(NFS_INO_REVAL_PAGECACHE | NFS_INO_REVAL_FORCED);
nfsi->cache_validity |= flags;
}
EXPORT_SYMBOL_GPL(nfs_set_cache_invalid);
@ -560,9 +558,6 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
} else if (fattr->size != 0)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_BLOCKS);
if (nfsi->cache_validity != 0)
nfsi->cache_validity |= NFS_INO_REVAL_FORCED;
nfs_setsecurity(inode, fattr, label);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
@ -2032,7 +2027,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
save_cache_validity &
(NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_MTIME | NFS_INO_INVALID_SIZE |
NFS_INO_REVAL_FORCED);
NFS_INO_INVALID_BLOCKS);
cache_revalidated = false;
}
@ -2064,27 +2059,24 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
attr_changed = true;
}
} else {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_CHANGE
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_CHANGE;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_MTIME) {
inode->i_mtime = fattr->mtime;
} else if (server->caps & NFS_CAP_MTIME) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_MTIME
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_MTIME;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_CTIME) {
inode->i_ctime = fattr->ctime;
} else if (server->caps & NFS_CAP_CTIME) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_CTIME
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_CTIME;
cache_revalidated = false;
}
@ -2115,19 +2107,16 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
fattr->valid |= NFS_ATTR_FATTR_SPACE_USED;
}
} else {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_SIZE
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_SIZE;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_ATIME)
inode->i_atime = fattr->atime;
else if (server->caps & NFS_CAP_ATIME) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_ATIME
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_ATIME;
cache_revalidated = false;
}
@ -2141,9 +2130,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
attr_changed = true;
}
} else if (server->caps & NFS_CAP_MODE) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_MODE
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_MODE;
cache_revalidated = false;
}
@ -2155,9 +2143,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
attr_changed = true;
}
} else if (server->caps & NFS_CAP_OWNER) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_OTHER;
cache_revalidated = false;
}
@ -2169,9 +2156,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
attr_changed = true;
}
} else if (server->caps & NFS_CAP_OWNER_GROUP) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_OTHER;
cache_revalidated = false;
}
@ -2183,9 +2169,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
attr_changed = true;
}
} else if (server->caps & NFS_CAP_NLINK) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_NLINK
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_NLINK;
cache_revalidated = false;
}
@ -2197,9 +2182,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
} else if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
inode->i_blocks = fattr->du.nfs2.blocks;
else {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_BLOCKS
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_BLOCKS;
cache_revalidated = false;
}

5
fs/nfs/nfs4proc.c
View File

@ -5477,10 +5477,7 @@ static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src,
if (cache_validity & NFS_INO_INVALID_BLOCKS)
bitmask[1] |= FATTR4_WORD1_SPACE_USED;
if (nfs4_have_delegation(inode, FMODE_READ) &&
!(cache_validity & NFS_INO_REVAL_FORCED))
bitmask[0] &= ~FATTR4_WORD0_SIZE;
else if (cache_validity & NFS_INO_INVALID_SIZE)
if (cache_validity & NFS_INO_INVALID_SIZE)
bitmask[0] |= FATTR4_WORD0_SIZE;
for (i = 0; i < NFS4_BITMASK_SZ; i++)