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Diffstat (limited to 'fs/nfs/dir.c')
-rw-r--r--fs/nfs/dir.c25
1 files changed, 20 insertions, 5 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index cd3469720cbf..625d8e5fb39d 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -154,6 +154,8 @@ typedef struct {
decode_dirent_t decode;
int plus;
int error;
+ unsigned long timestamp;
+ int timestamp_valid;
} nfs_readdir_descriptor_t;
/* Now we cache directories properly, by stuffing the dirent
@@ -195,6 +197,8 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page)
}
goto error;
}
+ desc->timestamp = timestamp;
+ desc->timestamp_valid = 1;
SetPageUptodate(page);
spin_lock(&inode->i_lock);
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATIME;
@@ -225,6 +229,10 @@ int dir_decode(nfs_readdir_descriptor_t *desc)
if (IS_ERR(p))
return PTR_ERR(p);
desc->ptr = p;
+ if (desc->timestamp_valid)
+ desc->entry->fattr->time_start = desc->timestamp;
+ else
+ desc->entry->fattr->valid &= ~NFS_ATTR_FATTR;
return 0;
}
@@ -316,14 +324,16 @@ int find_dirent_page(nfs_readdir_descriptor_t *desc)
__FUNCTION__, desc->page_index,
(long long) *desc->dir_cookie);
+ /* If we find the page in the page_cache, we cannot be sure
+ * how fresh the data is, so we will ignore readdir_plus attributes.
+ */
+ desc->timestamp_valid = 0;
page = read_cache_page(inode->i_mapping, desc->page_index,
(filler_t *)nfs_readdir_filler, desc);
if (IS_ERR(page)) {
status = PTR_ERR(page);
goto out;
}
- if (!PageUptodate(page))
- goto read_error;
/* NOTE: Someone else may have changed the READDIRPLUS flag */
desc->page = page;
@@ -337,9 +347,6 @@ int find_dirent_page(nfs_readdir_descriptor_t *desc)
out:
dfprintk(DIRCACHE, "NFS: %s: returns %d\n", __FUNCTION__, status);
return status;
- read_error:
- page_cache_release(page);
- return -EIO;
}
/*
@@ -468,6 +475,7 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
struct rpc_cred *cred = nfs_file_cred(file);
struct page *page = NULL;
int status;
+ unsigned long timestamp;
dfprintk(DIRCACHE, "NFS: uncached_readdir() searching for cookie %Lu\n",
(unsigned long long)*desc->dir_cookie);
@@ -477,6 +485,7 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
status = -ENOMEM;
goto out;
}
+ timestamp = jiffies;
desc->error = NFS_PROTO(inode)->readdir(file->f_path.dentry, cred, *desc->dir_cookie,
page,
NFS_SERVER(inode)->dtsize,
@@ -487,6 +496,8 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
desc->page = page;
desc->ptr = kmap(page); /* matching kunmap in nfs_do_filldir */
if (desc->error >= 0) {
+ desc->timestamp = timestamp;
+ desc->timestamp_valid = 1;
if ((status = dir_decode(desc)) == 0)
desc->entry->prev_cookie = *desc->dir_cookie;
} else
@@ -849,6 +860,10 @@ static int nfs_dentry_delete(struct dentry *dentry)
static void nfs_dentry_iput(struct dentry *dentry, struct inode *inode)
{
nfs_inode_return_delegation(inode);
+ if (S_ISDIR(inode->i_mode))
+ /* drop any readdir cache as it could easily be old */
+ NFS_I(inode)->cache_validity |= NFS_INO_INVALID_DATA;
+
if (dentry->d_flags & DCACHE_NFSFS_RENAMED) {
lock_kernel();
drop_nlink(inode);