> 在 2015年3月21日，05:36，Taesoo Kim <tsgat...@gmail.com> 写道：
>
> When ceph_update_writeable_page fails (including -EAGAIN), it
> unlocks (w/ unlock_page) the page but does not 'release'
> (w/ page_cache_release) properly.
>
> Upon error, properly set *pagep to NULL, indicating an error.
>
> Signed-off-by: Taesoo Kim <tsgat...@gmail.com>
> ---
> fs/ceph/addr.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
> index fd5599d..89091e3 100644
> --- a/fs/ceph/addr.c
> +++ b/fs/ceph/addr.c
> @@ -1146,6 +1146,10 @@ static int ceph_write_begin(struct file *file, struct
> address_space *mapping,
> inode, page, (int)pos, (int)len);
>
> r = ceph_update_writeable_page(file, pos, len, page);
> + if (r) {
> + page_cache_release(page);
> + *pagep = NULL;
> + }
> } while (r == -EAGAIN);
>
> return r;
> --
Added to our testing branch. Thank you
Yan, Zheng
>
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