Merge branch 'master' into for-2.6.35

[safe/jmp/linux-2.6] / fs / nfs / inode.c

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 443772d..50a56ed 100644 (file)
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -36,6 +36,7 @@
 #include <linux/vfs.h>
 #include <linux/inet.h>
 #include <linux/nfs_xdr.h>
+#include <linux/slab.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
@@ -114,16 +115,12 @@ void nfs_clear_inode(struct inode *inode)
  */
 int nfs_sync_mapping(struct address_space *mapping)
 {
-       int ret;
+       int ret = 0;
 
-       if (mapping->nrpages == 0)
-               return 0;
-       unmap_mapping_range(mapping, 0, 0, 0);
-       ret = filemap_write_and_wait(mapping);
-       if (ret != 0)
-               goto out;
-       ret = nfs_wb_all(mapping->host);
-out:
+       if (mapping->nrpages != 0) {
+               unmap_mapping_range(mapping, 0, 0, 0);
+               ret = nfs_wb_all(mapping->host);
+       }
        return ret;
 }
 
@@ -599,11 +596,6 @@ void put_nfs_open_context(struct nfs_open_context *ctx)
        __put_nfs_open_context(ctx, 0);
 }
 
-static void put_nfs_open_context_sync(struct nfs_open_context *ctx)
-{
-       __put_nfs_open_context(ctx, 1);
-}
-
 /*
  * Ensure that mmap has a recent RPC credential for use when writing out
  * shared pages
@@ -631,10 +623,10 @@ struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_c
        list_for_each_entry(pos, &nfsi->open_files, list) {
                if (cred != NULL && pos->cred != cred)
                        continue;
-               if ((pos->mode & mode) == mode) {
-                       ctx = get_nfs_open_context(pos);
-                       break;
-               }
+               if ((pos->mode & (FMODE_READ|FMODE_WRITE)) != mode)
+                       continue;
+               ctx = get_nfs_open_context(pos);
+               break;
        }
        spin_unlock(&inode->i_lock);
        return ctx;
@@ -650,7 +642,7 @@ static void nfs_file_clear_open_context(struct file *filp)
                spin_lock(&inode->i_lock);
                list_move_tail(&ctx->list, &NFS_I(inode)->open_files);
                spin_unlock(&inode->i_lock);
-               put_nfs_open_context_sync(ctx);
+               __put_nfs_open_context(ctx, filp->f_flags & O_DIRECT ? 0 : 1);
        }
 }
 
@@ -738,7 +730,7 @@ int nfs_attribute_timeout(struct inode *inode)
 {
        struct nfs_inode *nfsi = NFS_I(inode);
 
-       if (nfs_have_delegation(inode, FMODE_READ))
+       if (nfs_have_delegated_attributes(inode))
                return 0;
        return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
 }
@@ -758,7 +750,7 @@ int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
        return __nfs_revalidate_inode(server, inode);
 }
 
-static int nfs_invalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
+static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
 {
        struct nfs_inode *nfsi = NFS_I(inode);
        
@@ -779,49 +771,10 @@ static int nfs_invalidate_mapping_nolock(struct inode *inode, struct address_spa
        return 0;
 }
 
-static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
-{
-       int ret = 0;
-
-       mutex_lock(&inode->i_mutex);
-       if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_DATA) {
-               ret = nfs_sync_mapping(mapping);
-               if (ret == 0)
-                       ret = nfs_invalidate_mapping_nolock(inode, mapping);
-       }
-       mutex_unlock(&inode->i_mutex);
-       return ret;
-}
-
-/**
- * nfs_revalidate_mapping_nolock - Revalidate the pagecache
- * @inode - pointer to host inode
- * @mapping - pointer to mapping
- */
-int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
-{
-       struct nfs_inode *nfsi = NFS_I(inode);
-       int ret = 0;
-
-       if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
-                       || nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
-               ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
-               if (ret < 0)
-                       goto out;
-       }
-       if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
-               ret = nfs_invalidate_mapping_nolock(inode, mapping);
-out:
-       return ret;
-}
-
 /**
  * nfs_revalidate_mapping - Revalidate the pagecache
  * @inode - pointer to host inode
  * @mapping - pointer to mapping
- *
- * This version of the function will take the inode->i_mutex and attempt to
- * flush out all dirty data if it needs to invalidate the page cache.
  */
 int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
 {