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NFS: More fine grained attribute tracking

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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>
This commit is contained in:
Trond Myklebust
2018-03-20 16:53:31 -04:00
committed by Anna Schumaker
parent cac88f942d
commit 16e1437517
5 changed files with 94 additions and 54 deletions
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7
fs/nfs/nfs4proc.c
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@@ -1045,7 +1045,9 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo,
struct nfs_inode *nfsi = NFS_I(dir);
spin_lock(&dir->i_lock);
nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
nfsi->cache_validity |= NFS_INO_INVALID_CTIME
| NFS_INO_INVALID_MTIME
| NFS_INO_INVALID_DATA;
if (cinfo->atomic && cinfo->before == inode_peek_iversion_raw(dir)) {
nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE;
nfsi->attrtimeo_timestamp = jiffies;
@@ -5364,7 +5366,8 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl
* so mark the attribute cache invalid.
*/
spin_lock(&inode->i_lock);
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR;
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_CHANGE
| NFS_INO_INVALID_CTIME;
spin_unlock(&inode->i_lock);
nfs_access_zap_cache(inode);
nfs_zap_acl_cache(inode);