LU-8358 vvp: Print discarded page warning on -EIO

On client eviction, the client sometimes has dirty pages
outstanding, which are then discarded.  The client is
supposed to print an error when this happens,
from vvp_vmpage_error->ll_dirty_page_discard_warn.

However, the client looks for specific errors, and newer
Lustre clients will sometimes return -EIO to I/O requests
on eviction, instead of -EINTR.  Since they can still
return -EINTR, we must add -EIO as a new condition and
keep -EINTR.

Signed-off-by: Patrick Farrell <paf@cray.com>
Change-Id: I22ac82570a3840782c3fc6db40281b4a2c1cba1c
Reviewed-on: https://review.whamcloud.com/21111
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Chris Horn <hornc@cray.com>
Reviewed-by: Ben Evans <bevans@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

diff --git a/lustre/llite/vvp_page.c b/lustre/llite/vvp_page.c
index 541f795..4f7e6d5 100644 (file)
--- a/lustre/llite/vvp_page.c
+++ b/lustre/llite/vvp_page.c
@@ -242,8 +242,8 @@ static void vvp_vmpage_error(struct inode *inode, struct page *vmpage, int ioret
                else
                        set_bit(AS_EIO, &inode->i_mapping->flags);
 
-               if ((ioret == -ESHUTDOWN || ioret == -EINTR) &&
-                    obj->vob_discard_page_warned == 0) {
+               if ((ioret == -ESHUTDOWN || ioret == -EINTR ||
+                    ioret == -EIO) && obj->vob_discard_page_warned == 0) {
                        obj->vob_discard_page_warned = 1;
                        ll_dirty_page_discard_warn(vmpage, ioret);
                }