NFS: More fine grained attribute tracking
Currently, if the NFS_INO_INVALID_ATTR flag is set, for instance by
a call to nfs_post_op_update_inode_locked(), then it will not be cleared
until all the attributes have been revalidated. This means, for instance,
that NFSv4 writes will always force a full attribute revalidation.
Track the ctime, mtime, size and change attribute separately from the
other attributes so that we can have nfs_post_op_update_inode_locked()
set them correctly, and later have the cache consistency bitmask be
able to clear them.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 6e5a96e..23880f4 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -452,7 +452,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
inode->i_mode = fattr->mode;
if ((fattr->valid & NFS_ATTR_FATTR_MODE) == 0
&& nfs_server_capable(inode, NFS_CAP_MODE))
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
/* Why so? Because we want revalidate for devices/FIFOs, and
* that's precisely what we have in nfs_file_inode_operations.
*/
@@ -498,37 +498,35 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
if (fattr->valid & NFS_ATTR_FATTR_ATIME)
inode->i_atime = fattr->atime;
else if (nfs_server_capable(inode, NFS_CAP_ATIME))
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATIME);
if (fattr->valid & NFS_ATTR_FATTR_MTIME)
inode->i_mtime = fattr->mtime;
else if (nfs_server_capable(inode, NFS_CAP_MTIME))
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME);
if (fattr->valid & NFS_ATTR_FATTR_CTIME)
inode->i_ctime = fattr->ctime;
else if (nfs_server_capable(inode, NFS_CAP_CTIME))
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_CTIME);
if (fattr->valid & NFS_ATTR_FATTR_CHANGE)
inode_set_iversion_raw(inode, fattr->change_attr);
else
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR
- | NFS_INO_REVAL_PAGECACHE);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE);
if (fattr->valid & NFS_ATTR_FATTR_SIZE)
inode->i_size = nfs_size_to_loff_t(fattr->size);
else
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR
- | NFS_INO_REVAL_PAGECACHE);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_SIZE);
if (fattr->valid & NFS_ATTR_FATTR_NLINK)
set_nlink(inode, fattr->nlink);
else if (nfs_server_capable(inode, NFS_CAP_NLINK))
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
if (fattr->valid & NFS_ATTR_FATTR_OWNER)
inode->i_uid = fattr->uid;
else if (nfs_server_capable(inode, NFS_CAP_OWNER))
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
if (fattr->valid & NFS_ATTR_FATTR_GROUP)
inode->i_gid = fattr->gid;
else if (nfs_server_capable(inode, NFS_CAP_OWNER_GROUP))
- nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR);
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
inode->i_blocks = fattr->du.nfs2.blocks;
if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) {
@@ -657,6 +655,7 @@ static int nfs_vmtruncate(struct inode * inode, loff_t offset)
* nfs_setattr_update_inode - Update inode metadata after a setattr call.
* @inode: pointer to struct inode
* @attr: pointer to struct iattr
+ * @fattr: pointer to struct nfs_fattr
*
* Note: we do this in the *proc.c in order to ensure that
* it works for things like exclusive creates too.
@@ -669,6 +668,8 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr,
spin_lock(&inode->i_lock);
NFS_I(inode)->attr_gencount = fattr->gencount;
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE
+ | NFS_INO_INVALID_CTIME);
if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) {
if ((attr->ia_valid & ATTR_MODE) != 0) {
int mode = attr->ia_mode & S_IALLUGO;
@@ -683,13 +684,12 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr,
| NFS_INO_INVALID_ACL);
}
if ((attr->ia_valid & ATTR_SIZE) != 0) {
+ nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME);
nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC);
nfs_vmtruncate(inode, attr->ia_size);
}
if (fattr->valid)
nfs_update_inode(inode, fattr);
- else
- NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
spin_unlock(&inode->i_lock);
}
EXPORT_SYMBOL_GPL(nfs_setattr_update_inode);
@@ -1361,33 +1361,41 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
if (!nfs_file_has_buffered_writers(nfsi)) {
/* Verify a few of the more important attributes */
if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 && !inode_eq_iversion_raw(inode, fattr->change_attr))
- invalid |= NFS_INO_INVALID_ATTR | NFS_INO_REVAL_PAGECACHE;
+ invalid |= NFS_INO_INVALID_CHANGE
+ | NFS_INO_REVAL_PAGECACHE;
if ((fattr->valid & NFS_ATTR_FATTR_MTIME) && !timespec_equal(&inode->i_mtime, &fattr->mtime))
- invalid |= NFS_INO_INVALID_ATTR;
+ invalid |= NFS_INO_INVALID_MTIME;
if ((fattr->valid & NFS_ATTR_FATTR_CTIME) && !timespec_equal(&inode->i_ctime, &fattr->ctime))
- invalid |= NFS_INO_INVALID_ATTR;
+ invalid |= NFS_INO_INVALID_CTIME;
if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
cur_size = i_size_read(inode);
new_isize = nfs_size_to_loff_t(fattr->size);
if (cur_size != new_isize)
- invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+ invalid |= NFS_INO_INVALID_SIZE
+ | NFS_INO_REVAL_PAGECACHE;
}
}
/* Have any file permissions changed? */
if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
- invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+ invalid |= NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER;
if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, fattr->uid))
- invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+ invalid |= NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER;
if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, fattr->gid))
- invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+ invalid |= NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER;
/* Has the link count changed? */
if ((fattr->valid & NFS_ATTR_FATTR_NLINK) && inode->i_nlink != fattr->nlink)
- invalid |= NFS_INO_INVALID_ATTR;
+ invalid |= NFS_INO_INVALID_OTHER;
if ((fattr->valid & NFS_ATTR_FATTR_ATIME) && !timespec_equal(&inode->i_atime, &fattr->atime))
invalid |= NFS_INO_INVALID_ATIME;
@@ -1589,10 +1597,9 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr)
}
EXPORT_SYMBOL_GPL(nfs_refresh_inode);
-static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
+static int nfs_post_op_update_inode_locked(struct inode *inode,
+ struct nfs_fattr *fattr, unsigned int invalid)
{
- unsigned long invalid = NFS_INO_INVALID_ATTR;
-
if (S_ISDIR(inode->i_mode))
invalid |= NFS_INO_INVALID_DATA;
nfs_set_cache_invalid(inode, invalid);
@@ -1621,7 +1628,9 @@ int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr)
spin_lock(&inode->i_lock);
nfs_fattr_set_barrier(fattr);
- status = nfs_post_op_update_inode_locked(inode, fattr);
+ status = nfs_post_op_update_inode_locked(inode, fattr,
+ NFS_INO_INVALID_CHANGE
+ | NFS_INO_INVALID_CTIME);
spin_unlock(&inode->i_lock);
return status;
@@ -1673,7 +1682,10 @@ int nfs_post_op_update_inode_force_wcc_locked(struct inode *inode, struct nfs_fa
fattr->valid |= NFS_ATTR_FATTR_PRESIZE;
}
out_noforce:
- status = nfs_post_op_update_inode_locked(inode, fattr);
+ status = nfs_post_op_update_inode_locked(inode, fattr,
+ NFS_INO_INVALID_CHANGE
+ | NFS_INO_INVALID_CTIME
+ | NFS_INO_INVALID_MTIME);
return status;
}
@@ -1795,12 +1807,15 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
inode->i_sb->s_id, inode->i_ino);
/* Could it be a race with writeback? */
if (!have_writers) {
- invalid |= NFS_INO_INVALID_ATTR
+ invalid |= NFS_INO_INVALID_CHANGE
| NFS_INO_INVALID_DATA
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
/* Force revalidate of all attributes */
- save_cache_validity |= NFS_INO_INVALID_ATTR;
+ save_cache_validity |= NFS_INO_INVALID_CTIME
+ | NFS_INO_INVALID_MTIME
+ | NFS_INO_INVALID_SIZE
+ | NFS_INO_INVALID_OTHER;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
}
@@ -1808,7 +1823,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
}
} else {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ATTR
+ (NFS_INO_INVALID_CHANGE
| NFS_INO_REVAL_PAGECACHE
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
@@ -1818,7 +1833,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
} else if (server->caps & NFS_CAP_MTIME) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ATTR
+ (NFS_INO_INVALID_MTIME
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}
@@ -1827,7 +1842,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
} else if (server->caps & NFS_CAP_CTIME) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ATTR
+ (NFS_INO_INVALID_CTIME
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}
@@ -1842,7 +1857,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (!nfs_have_writebacks(inode) || new_isize > cur_isize) {
i_size_write(inode, new_isize);
if (!have_writers)
- invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
+ invalid |= NFS_INO_INVALID_DATA;
}
dprintk("NFS: isize change on server for file %s/%ld "
"(%Ld to %Ld)\n",
@@ -1853,7 +1868,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
}
} else {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ATTR
+ (NFS_INO_INVALID_SIZE
| NFS_INO_REVAL_PAGECACHE
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
@@ -1874,55 +1889,61 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
umode_t newmode = inode->i_mode & S_IFMT;
newmode |= fattr->mode & S_IALLUGO;
inode->i_mode = newmode;
- invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ invalid |= NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER;
}
} else if (server->caps & NFS_CAP_MODE) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ATTR
- | NFS_INO_INVALID_ACCESS
+ (NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_OWNER) {
if (!uid_eq(inode->i_uid, fattr->uid)) {
- invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ invalid |= NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER;
inode->i_uid = fattr->uid;
}
} else if (server->caps & NFS_CAP_OWNER) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ATTR
- | NFS_INO_INVALID_ACCESS
+ (NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_GROUP) {
if (!gid_eq(inode->i_gid, fattr->gid)) {
- invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
+ invalid |= NFS_INO_INVALID_ACCESS
+ | NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER;
inode->i_gid = fattr->gid;
}
} else if (server->caps & NFS_CAP_OWNER_GROUP) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ATTR
- | NFS_INO_INVALID_ACCESS
+ (NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
+ | NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
if (inode->i_nlink != fattr->nlink) {
- invalid |= NFS_INO_INVALID_ATTR;
+ invalid |= NFS_INO_INVALID_OTHER;
if (S_ISDIR(inode->i_mode))
invalid |= NFS_INO_INVALID_DATA;
set_nlink(inode, fattr->nlink);
}
} else if (server->caps & NFS_CAP_NLINK) {
nfsi->cache_validity |= save_cache_validity &
- (NFS_INO_INVALID_ATTR
+ (NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
cache_revalidated = false;
}