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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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21
include/linux/nfs_fs.h
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@@ -198,7 +198,6 @@ struct nfs_inode {
/*
* Cache validity bit flags
*/
#define NFS_INO_INVALID_ATTR BIT(0) /* cached attrs are invalid */
#define NFS_INO_INVALID_DATA BIT(1) /* cached data is invalid */
#define NFS_INO_INVALID_ATIME BIT(2) /* cached atime is invalid */
#define NFS_INO_INVALID_ACCESS BIT(3) /* cached access cred invalid */
@@ -206,6 +205,17 @@ struct nfs_inode {
#define NFS_INO_REVAL_PAGECACHE BIT(5) /* must revalidate pagecache */
#define NFS_INO_REVAL_FORCED BIT(6) /* force revalidation ignoring a delegation */
#define NFS_INO_INVALID_LABEL BIT(7) /* cached label is invalid */
#define NFS_INO_INVALID_CHANGE BIT(8) /* cached change is invalid */
#define NFS_INO_INVALID_CTIME BIT(9) /* cached ctime is invalid */
#define NFS_INO_INVALID_MTIME BIT(10) /* cached mtime is invalid */
#define NFS_INO_INVALID_SIZE BIT(11) /* cached size is invalid */
#define NFS_INO_INVALID_OTHER BIT(12) /* other attrs are invalid */
#define NFS_INO_INVALID_ATTR (NFS_INO_INVALID_CHANGE \
| NFS_INO_INVALID_CTIME \
| NFS_INO_INVALID_MTIME \
| NFS_INO_INVALID_SIZE \
| NFS_INO_INVALID_OTHER) /* inode metadata is invalid */
/*
* Bit offsets in flags field
@@ -292,10 +302,11 @@ static inline void nfs_mark_for_revalidate(struct inode *inode)
struct nfs_inode *nfsi = NFS_I(inode);
spin_lock(&inode->i_lock);
nfsi->cache_validity |= NFS_INO_INVALID_ATTR |
NFS_INO_REVAL_PAGECACHE |
NFS_INO_INVALID_ACCESS |
NFS_INO_INVALID_ACL;
nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE
| NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
| NFS_INO_INVALID_CHANGE
| NFS_INO_INVALID_CTIME;
if (S_ISDIR(inode->i_mode))
nfsi->cache_validity |= NFS_INO_INVALID_DATA;
spin_unlock(&inode->i_lock);