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Merge branch 'cache_consistency'

This commit is contained in:
Trond Myklebust 2019-06-11 14:29:47 -04:00
parent 41adafa02e 1c341b7775
commit 02a2779f22
3 changed files with 17 additions and 4 deletions
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4
fs/nfs/dir.c
View File

@ -80,6 +80,10 @@ static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir
ctx->dup_cookie = 0;
ctx->cred = get_cred(cred);
spin_lock(&dir->i_lock);
if (list_empty(&nfsi->open_files) &&
(nfsi->cache_validity & NFS_INO_DATA_INVAL_DEFER))
nfsi->cache_validity |= NFS_INO_INVALID_DATA |
NFS_INO_REVAL_FORCED;
list_add(&ctx->list, &nfsi->open_files);
spin_unlock(&dir->i_lock);
return ctx;

15
fs/nfs/inode.c
View File

@ -208,7 +208,7 @@ static void nfs_set_cache_invalid(struct inode *inode, unsigned long flags)
}
if (inode->i_mapping->nrpages == 0)
flags &= ~NFS_INO_INVALID_DATA;
flags &= ~(NFS_INO_INVALID_DATA|NFS_INO_DATA_INVAL_DEFER);
nfsi->cache_validity |= flags;
if (flags & NFS_INO_INVALID_DATA)
nfs_fscache_invalidate(inode);
@ -652,7 +652,8 @@ static int nfs_vmtruncate(struct inode * inode, loff_t offset)
i_size_write(inode, offset);
/* Optimisation */
if (offset == 0)
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_DATA;
NFS_I(inode)->cache_validity &= ~(NFS_INO_INVALID_DATA |
NFS_INO_DATA_INVAL_DEFER);
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_SIZE;
spin_unlock(&inode->i_lock);
@ -1032,6 +1033,10 @@ void nfs_inode_attach_open_context(struct nfs_open_context *ctx)
struct nfs_inode *nfsi = NFS_I(inode);
spin_lock(&inode->i_lock);
if (list_empty(&nfsi->open_files) &&
(nfsi->cache_validity & NFS_INO_DATA_INVAL_DEFER))
nfsi->cache_validity |= NFS_INO_INVALID_DATA |
NFS_INO_REVAL_FORCED;
list_add_tail_rcu(&ctx->list, &nfsi->open_files);
spin_unlock(&inode->i_lock);
}
@ -1313,7 +1318,8 @@ int nfs_revalidate_mapping(struct inode *inode,
set_bit(NFS_INO_INVALIDATING, bitlock);
smp_wmb();
nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
nfsi->cache_validity &= ~(NFS_INO_INVALID_DATA|
NFS_INO_DATA_INVAL_DEFER);
spin_unlock(&inode->i_lock);
trace_nfs_invalidate_mapping_enter(inode);
ret = nfs_invalidate_mapping(inode, mapping);
@ -1871,7 +1877,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id,
inode->i_ino);
}
} else if (!have_delegation)
nfsi->cache_validity |= NFS_INO_DATA_INVAL_DEFER;
inode_set_iversion_raw(inode, fattr->change_attr);
attr_changed = true;
}

2
include/linux/nfs_fs.h
View File

@ -223,6 +223,8 @@ struct nfs4_copy_state {
#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_DATA_INVAL_DEFER \
BIT(13) /* Deferred cache invalidation */
#define NFS_INO_INVALID_ATTR (NFS_INO_INVALID_CHANGE \
| NFS_INO_INVALID_CTIME \