diff options
| -rw-r--r-- | fs/nfs/file.c | 12 | ||||
| -rw-r--r-- | fs/nfs/inode.c | 43 | ||||
| -rw-r--r-- | fs/nfs/internal.h | 1 |
3 files changed, 34 insertions, 22 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 64c11f399b3d..599a602cb2fd 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -101,21 +101,11 @@ EXPORT_SYMBOL_GPL(nfs_file_release); static int nfs_revalidate_file_size(struct inode *inode, struct file *filp) { struct nfs_server *server = NFS_SERVER(inode); - struct nfs_inode *nfsi = NFS_I(inode); - const unsigned long force_reval = NFS_INO_REVAL_PAGECACHE|NFS_INO_REVAL_FORCED; - unsigned long cache_validity = nfsi->cache_validity; - - if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) && - (cache_validity & force_reval) != force_reval) - goto out_noreval; if (filp->f_flags & O_DIRECT) goto force_reval; - if (nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE) - goto force_reval; - if (nfs_attribute_timeout(inode)) + if (nfs_check_cache_invalid(inode, NFS_INO_REVAL_PAGECACHE)) goto force_reval; -out_noreval: return 0; force_reval: return __nfs_revalidate_inode(server, inode); diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 2fc237cd338e..e3194aa797f7 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -160,6 +160,36 @@ int nfs_sync_mapping(struct address_space *mapping) return ret; } +static bool nfs_check_cache_invalid_delegated(struct inode *inode, unsigned long flags) +{ + unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity); + + /* Special case for the pagecache or access cache */ + if (flags == NFS_INO_REVAL_PAGECACHE && + !(cache_validity & NFS_INO_REVAL_FORCED)) + return false; + return (cache_validity & flags) != 0; +} + +static bool nfs_check_cache_invalid_not_delegated(struct inode *inode, unsigned long flags) +{ + unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity); + + if ((cache_validity & flags) != 0) + return true; + if (nfs_attribute_timeout(inode)) + return true; + return false; +} + +bool nfs_check_cache_invalid(struct inode *inode, unsigned long flags) +{ + if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ)) + return nfs_check_cache_invalid_delegated(inode, flags); + + return nfs_check_cache_invalid_not_delegated(inode, flags); +} + static void nfs_set_cache_invalid(struct inode *inode, unsigned long flags) { struct nfs_inode *nfsi = NFS_I(inode); @@ -1116,17 +1146,8 @@ static int nfs_invalidate_mapping(struct inode *inode, struct address_space *map bool nfs_mapping_need_revalidate_inode(struct inode *inode) { - unsigned long cache_validity = NFS_I(inode)->cache_validity; - - if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ)) { - const unsigned long force_reval = - NFS_INO_REVAL_PAGECACHE|NFS_INO_REVAL_FORCED; - return (cache_validity & force_reval) == force_reval; - } - - return (cache_validity & NFS_INO_REVAL_PAGECACHE) - || nfs_attribute_timeout(inode) - || NFS_STALE(inode); + return nfs_check_cache_invalid(inode, NFS_INO_REVAL_PAGECACHE) || + NFS_STALE(inode); } int nfs_revalidate_mapping_rcu(struct inode *inode) diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 6b79c2ca9b9a..09ca5095c04e 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -381,6 +381,7 @@ extern int nfs_drop_inode(struct inode *); extern void nfs_clear_inode(struct inode *); extern void nfs_evict_inode(struct inode *); void nfs_zap_acl_cache(struct inode *inode); +extern bool nfs_check_cache_invalid(struct inode *, unsigned long); extern int nfs_wait_bit_killable(struct wait_bit_key *key, int mode); extern int nfs_wait_atomic_killable(atomic_t *p); |