#define NFSDBG_FACILITY NFSDBG_VFS
+#define NFS_64_BIT_INODE_NUMBERS_ENABLED 1
+
+/* Default is to see 64-bit inode numbers */
+static int enable_ino64 = NFS_64_BIT_INODE_NUMBERS_ENABLED;
+
static void nfs_invalidate_inode(struct inode *);
static int nfs_update_inode(struct inode *, struct nfs_fattr *);
return nfs_fileid_to_ino_t(fattr->fileid);
}
+/**
+ * nfs_compat_user_ino64 - returns the user-visible inode number
+ * @fileid: 64-bit fileid
+ *
+ * This function returns a 32-bit inode number if the boot parameter
+ * nfs.enable_ino64 is zero.
+ */
+u64 nfs_compat_user_ino64(u64 fileid)
+{
+ int ino;
+
+ if (enable_ino64)
+ return fileid;
+ ino = fileid;
+ if (sizeof(ino) < sizeof(fileid))
+ ino ^= fileid >> (sizeof(fileid)-sizeof(ino)) * 8;
+ return ino;
+}
+
int nfs_write_inode(struct inode *inode, int sync)
{
int ret;
*/
BUG_ON(nfs_have_writebacks(inode));
BUG_ON(!list_empty(&NFS_I(inode)->open_files));
- BUG_ON(atomic_read(&NFS_I(inode)->data_updates) != 0);
nfs_zap_acl_cache(inode);
nfs_access_zap_cache(inode);
}
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
- NFS_ATTRTIMEO(inode) = NFS_MINATTRTIMEO(inode);
- NFS_ATTRTIMEO_UPDATE(inode) = jiffies;
+ nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
+ nfsi->attrtimeo_timestamp = jiffies;
memset(NFS_COOKIEVERF(inode), 0, sizeof(NFS_COOKIEVERF(inode)));
if (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))
return 0;
lock_kernel();
- nfs_begin_data_update(inode);
/* Write all dirty data */
if (S_ISREG(inode->i_mode)) {
filemap_write_and_wait(inode->i_mapping);
error = NFS_PROTO(inode)->setattr(dentry, &fattr, attr);
if (error == 0)
nfs_refresh_inode(inode, &fattr);
- nfs_end_data_update(inode);
unlock_kernel();
return error;
}
err = nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (!err) {
generic_fillattr(inode, stat);
- stat->ino = NFS_FILEID(inode);
+ stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
}
return err;
}
}
spin_lock(&inode->i_lock);
nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
- if (S_ISDIR(inode->i_mode)) {
+ if (S_ISDIR(inode->i_mode))
memset(nfsi->cookieverf, 0, sizeof(nfsi->cookieverf));
- /* This ensures we revalidate child dentries */
- nfsi->cache_change_attribute = jiffies;
- }
spin_unlock(&inode->i_lock);
nfs_inc_stats(inode, NFSIOS_DATAINVALIDATE);
dfprintk(PAGECACHE, "NFS: (%s/%Ld) data cache invalidated\n",
return ret;
}
-/**
- * nfs_begin_data_update
- * @inode - pointer to inode
- * Declare that a set of operations will update file data on the server
- */
-void nfs_begin_data_update(struct inode *inode)
-{
- atomic_inc(&NFS_I(inode)->data_updates);
-}
-
-/**
- * nfs_end_data_update
- * @inode - pointer to inode
- * Declare end of the operations that will update file data
- * This will mark the inode as immediately needing revalidation
- * of its attribute cache.
- */
-void nfs_end_data_update(struct inode *inode)
-{
- struct nfs_inode *nfsi = NFS_I(inode);
-
- /* Directories: invalidate page cache */
- if (S_ISDIR(inode->i_mode)) {
- spin_lock(&inode->i_lock);
- nfsi->cache_validity |= NFS_INO_INVALID_DATA;
- spin_unlock(&inode->i_lock);
- }
- atomic_dec(&nfsi->data_updates);
-}
-
static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_inode *nfsi = NFS_I(inode);
+ if ((fattr->valid & NFS_ATTR_WCC_V4) != 0 &&
+ nfsi->change_attr == fattr->pre_change_attr) {
+ nfsi->change_attr = fattr->change_attr;
+ if (S_ISDIR(inode->i_mode))
+ nfsi->cache_validity |= NFS_INO_INVALID_DATA;
+ }
/* If we have atomic WCC data, we may update some attributes */
if ((fattr->valid & NFS_ATTR_WCC) != 0) {
if (timespec_equal(&inode->i_ctime, &fattr->pre_ctime))
{
struct nfs_inode *nfsi = NFS_I(inode);
loff_t cur_size, new_isize;
- int data_unstable;
+ unsigned long invalid = 0;
/* Has the inode gone and changed behind our back? */
return -EIO;
}
- /* Are we in the process of updating data on the server? */
- data_unstable = nfs_caches_unstable(inode);
-
/* Do atomic weak cache consistency updates */
nfs_wcc_update_inode(inode, fattr);
if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
nfsi->change_attr != fattr->change_attr)
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/* Verify a few of the more important attributes */
if (!timespec_equal(&inode->i_mtime, &fattr->mtime))
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
cur_size = i_size_read(inode);
new_isize = nfs_size_to_loff_t(fattr->size);
if (cur_size != new_isize && nfsi->npages == 0)
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+ invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
/* Have any file permissions changed? */
if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)
|| inode->i_uid != fattr->uid
|| inode->i_gid != fattr->gid)
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
+ invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL;
/* Has the link count changed? */
if (inode->i_nlink != fattr->nlink)
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
+ invalid |= NFS_INO_INVALID_ATTR;
if (!timespec_equal(&inode->i_atime, &fattr->atime))
- nfsi->cache_validity |= NFS_INO_INVALID_ATIME;
+ invalid |= NFS_INO_INVALID_ATIME;
+
+ if (invalid != 0)
+ nfsi->cache_validity |= invalid;
+ else
+ nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR
+ | NFS_INO_INVALID_ATIME
+ | NFS_INO_REVAL_PAGECACHE);
nfsi->read_cache_jiffies = fattr->time_start;
return 0;
int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_inode *nfsi = NFS_I(inode);
- int status = 0;
- if (unlikely((fattr->valid & NFS_ATTR_FATTR) == 0)) {
- spin_lock(&inode->i_lock);
- nfsi->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
- nfsi->cache_change_attribute = jiffies;
- spin_unlock(&inode->i_lock);
- goto out;
+ spin_lock(&inode->i_lock);
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+ if (S_ISDIR(inode->i_mode))
+ nfsi->cache_validity |= NFS_INO_INVALID_DATA;
+ spin_unlock(&inode->i_lock);
+ return nfs_refresh_inode(inode, fattr);
+}
+
+/**
+ * nfs_post_op_update_inode_force_wcc - try to update the inode attribute cache
+ * @inode - pointer to inode
+ * @fattr - updated attributes
+ *
+ * After an operation that has changed the inode metadata, mark the
+ * attribute cache as being invalid, then try to update it. Fake up
+ * weak cache consistency data, if none exist.
+ *
+ * This function is mainly designed to be used by the ->write_done() functions.
+ */
+int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr)
+{
+ if ((fattr->valid & NFS_ATTR_FATTR_V4) != 0 &&
+ (fattr->valid & NFS_ATTR_WCC_V4) == 0) {
+ fattr->pre_change_attr = NFS_I(inode)->change_attr;
+ fattr->valid |= NFS_ATTR_WCC_V4;
}
- status = nfs_refresh_inode(inode, fattr);
-out:
- return status;
+ if ((fattr->valid & NFS_ATTR_FATTR) != 0 &&
+ (fattr->valid & NFS_ATTR_WCC) == 0) {
+ memcpy(&fattr->pre_ctime, &inode->i_ctime, sizeof(fattr->pre_ctime));
+ memcpy(&fattr->pre_mtime, &inode->i_mtime, sizeof(fattr->pre_mtime));
+ fattr->pre_size = inode->i_size;
+ fattr->valid |= NFS_ATTR_WCC;
+ }
+ return nfs_post_op_update_inode(inode, fattr);
}
/*
struct nfs_server *server;
struct nfs_inode *nfsi = NFS_I(inode);
loff_t cur_isize, new_isize;
- unsigned int invalid = 0;
+ unsigned long invalid = 0;
unsigned long now = jiffies;
dfprintk(VFS, "NFS: %s(%s/%ld ct=%d info=0x%x)\n",
* Update the read time so we don't revalidate too often.
*/
nfsi->read_cache_jiffies = fattr->time_start;
- nfsi->last_updated = now;
nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ATIME
| NFS_INO_REVAL_PAGECACHE);
nfsi->cache_change_attribute = now;
}
/* If ctime has changed we should definitely clear access+acl caches */
- if (!timespec_equal(&inode->i_ctime, &fattr->ctime)) {
+ if (!timespec_equal(&inode->i_ctime, &fattr->ctime))
invalid |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
- nfsi->cache_change_attribute = now;
- }
} else if (nfsi->change_attr != fattr->change_attr) {
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
inode->i_size = new_isize;
invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
}
- nfsi->cache_change_attribute = now;
dprintk("NFS: isize change on server for file %s/%ld\n",
inode->i_sb->s_id, inode->i_ino);
}
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
- } else if (!time_in_range(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
- if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode))
- nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
- nfsi->attrtimeo_timestamp = now;
+ nfsi->last_updated = now;
+ } else {
+ if (!time_in_range(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) {
+ if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode))
+ nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode);
+ nfsi->attrtimeo_timestamp = now;
+ }
+ /*
+ * Avoid jiffy wraparound issues with nfsi->last_updated
+ */
+ if (!time_in_range(nfsi->last_updated, nfsi->read_cache_jiffies, now))
+ nfsi->last_updated = nfsi->read_cache_jiffies;
}
invalid &= ~NFS_INO_INVALID_ATTR;
/* Don't invalidate the data if we were to blame */
#endif
}
-static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags)
+static void init_once(struct kmem_cache * cachep, void *foo)
{
struct nfs_inode *nfsi = (struct nfs_inode *) foo;
INIT_LIST_HEAD(&nfsi->access_cache_entry_lru);
INIT_LIST_HEAD(&nfsi->access_cache_inode_lru);
INIT_RADIX_TREE(&nfsi->nfs_page_tree, GFP_ATOMIC);
- atomic_set(&nfsi->data_updates, 0);
nfsi->ncommit = 0;
nfsi->npages = 0;
nfs4_init_once(nfsi);
/* Not quite true; I just maintain it */
MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
MODULE_LICENSE("GPL");
+module_param(enable_ino64, bool, 0644);
module_init(init_nfs_fs)
module_exit(exit_nfs_fs)
projects / linux-2.6-omap-h63xx.git / blobdiff