PS: the part below was on top of patch from dwmw2; in the mainline the analog
of that sucker is in XFS.
> diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
> index 8291591..77ad3a5 100644
> --- a/fs/nfsd/vfs.c
> +++ b/fs/nfsd/vfs.c
> @@ -1832,6 +1832,7 @@ struct buffered_dirent {
> struct readdir_data {
> char *dirent;
> size_t used;
> + int full;
> };
>
> static int nfsd_buffered_filldir(void *__buf, const char *name, int namlen,
> @@ -1842,8 +1843,10 @@ static int nfsd_buffered_filldir(void *__buf, const char *name, int namlen,
> unsigned int reclen;
>
> reclen = ALIGN(sizeof(struct buffered_dirent) + namlen, sizeof(u64));
> - if (buf->used + reclen > PAGE_SIZE)
> + if (buf->used + reclen > PAGE_SIZE) {
> + buf->full = 1;
> return -EINVAL;
> + }
>
> de->namlen = namlen;
> de->offset = offset;
> @@ -1875,9 +1878,13 @@ static int nfsd_buffered_readdir(struct file *file, filldir_t func,
> unsigned int reclen;
>
> buf.used = 0;
> + buf.full = 0;
>
> host_err = vfs_readdir(file, nfsd_buffered_filldir, &buf);
> - if (host_err)
> + if (buf.full)
> + host_err = 0;
> +
> + if (host_err < 0)
> break;
>
> size = buf.used;
--
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