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Subject[PATCH v3 1/3] NFS: Ensure we use the correct cookie in nfs_readdir_xdr_filler
Date
We need to use the cookie from the previous array entry, not the
actual cookie that we are searching for (except for the case of
uncached_readdir).

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---
fs/nfs/dir.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index f0a384e..e03537f 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -178,6 +178,7 @@ typedef struct {
struct page *page;
unsigned long page_index;
u64 *dir_cookie;
+ u64 last_cookie;
loff_t current_index;
decode_dirent_t decode;

@@ -344,6 +345,8 @@ int nfs_readdir_search_array(nfs_readdir_descriptor_t *desc)
else
status = nfs_readdir_search_for_cookie(array, desc);

+ if (status == -EAGAIN)
+ desc->last_cookie = array->last_cookie;
nfs_readdir_release_array(desc->page);
out:
return status;
@@ -563,7 +566,7 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
unsigned int array_size = ARRAY_SIZE(pages);

entry.prev_cookie = 0;
- entry.cookie = *desc->dir_cookie;
+ entry.cookie = desc->last_cookie;
entry.eof = 0;
entry.fh = nfs_alloc_fhandle();
entry.fattr = nfs_alloc_fattr();
@@ -672,8 +675,10 @@ int readdir_search_pagecache(nfs_readdir_descriptor_t *desc)
{
int res;

- if (desc->page_index == 0)
+ if (desc->page_index == 0) {
desc->current_index = 0;
+ desc->last_cookie = 0;
+ }
while (1) {
res = find_cache_page(desc);
if (res != -EAGAIN)
@@ -764,6 +769,7 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
}

desc->page_index = 0;
+ desc->last_cookie = *desc->dir_cookie;
desc->page = page;

status = nfs_readdir_xdr_to_array(desc, page, inode);
--
1.7.3.2


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