diff options
Diffstat (limited to 'fs/nfs/read.c')
| -rw-r--r-- | fs/nfs/read.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 7a9ee00e0c6..69f1549da2b 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -171,7 +171,7 @@ static int nfs_readpage_sync(struct nfs_open_context *ctx, struct inode *inode, rdata->args.offset = page_offset(page) + rdata->args.pgbase; dprintk("NFS: nfs_proc_read(%s, (%s/%Ld), %Lu, %u)\n", - NFS_SERVER(inode)->hostname, + NFS_SERVER(inode)->nfs_client->cl_hostname, inode->i_sb->s_id, (long long)NFS_FILEID(inode), (unsigned long long)rdata->args.pgbase, @@ -204,9 +204,11 @@ static int nfs_readpage_sync(struct nfs_open_context *ctx, struct inode *inode, NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME; spin_unlock(&inode->i_lock); - nfs_readpage_truncate_uninitialised_page(rdata); - if (rdata->res.eof || rdata->res.count == rdata->args.count) + if (rdata->res.eof || rdata->res.count == rdata->args.count) { SetPageUptodate(page); + if (rdata->res.eof && count != 0) + memclear_highpage_flush(page, rdata->args.pgbase, count); + } result = 0; io_error: @@ -566,8 +568,13 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data) nfs_add_stats(data->inode, NFSIOS_SERVERREADBYTES, resp->count); - /* Is this a short read? */ - if (task->tk_status >= 0 && resp->count < argp->count && !resp->eof) { + if (task->tk_status < 0) { + if (task->tk_status == -ESTALE) { + set_bit(NFS_INO_STALE, &NFS_FLAGS(data->inode)); + nfs_mark_for_revalidate(data->inode); + } + } else if (resp->count < argp->count && !resp->eof) { + /* This is a short read! */ nfs_inc_stats(data->inode, NFSIOS_SHORTREAD); /* Has the server at least made some progress? */ if (resp->count != 0) { @@ -614,6 +621,10 @@ int nfs_readpage(struct file *file, struct page *page) if (error) goto out_error; + error = -ESTALE; + if (NFS_STALE(inode)) + goto out_error; + if (file == NULL) { ctx = nfs_find_open_context(inode, NULL, FMODE_READ); if (ctx == NULL) @@ -676,7 +687,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping, }; struct inode *inode = mapping->host; struct nfs_server *server = NFS_SERVER(inode); - int ret; + int ret = -ESTALE; dprintk("NFS: nfs_readpages (%s/%Ld %d)\n", inode->i_sb->s_id, @@ -684,6 +695,9 @@ int nfs_readpages(struct file *filp, struct address_space *mapping, nr_pages); nfs_inc_stats(inode, NFSIOS_VFSREADPAGES); + if (NFS_STALE(inode)) + goto out; + if (filp == NULL) { desc.ctx = nfs_find_open_context(inode, NULL, FMODE_READ); if (desc.ctx == NULL) @@ -699,6 +713,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping, ret = err; } put_nfs_open_context(desc.ctx); +out: return ret; } |