From: Peter Lieven <pl@kamp.de>
Date: Fri, 20 Dec 2013 09:02:47 +0000 (+0100)
Subject: block/iscsi: return -ENOMEM if an async call fails immediately
X-Git-Tag: v2.0.0-rc0~148^2~88
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=92397116a6789ed4455c6dacea0f378cae096d8d;p=thirdparty%2Fqemu.git

block/iscsi: return -ENOMEM if an async call fails immediately

if an async libiscsi call fails directly it can only be due
to an out of memory condition. All other errors are returned
through the callback.

Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---

diff --git a/block/iscsi.c b/block/iscsi.c
index c0ea0c45439..76b3c96d38f 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -308,7 +308,7 @@ retry:
                                     iscsi_co_generic_cb, &iTask);
     if (iTask.task == NULL) {
         g_free(buf);
-        return -EIO;
+        return -ENOMEM;
     }
 #if defined(LIBISCSI_FEATURE_IOVECTOR)
     scsi_task_set_iov_out(iTask.task, (struct scsi_iovec *) iov->iov,
@@ -376,7 +376,7 @@ retry:
         break;
     }
     if (iTask.task == NULL) {
-        return -EIO;
+        return -ENOMEM;
     }
 #if defined(LIBISCSI_FEATURE_IOVECTOR)
     scsi_task_set_iov_in(iTask.task, (struct scsi_iovec *) iov->iov, iov->niov);
@@ -419,7 +419,7 @@ static int coroutine_fn iscsi_co_flush(BlockDriverState *bs)
 retry:
     if (iscsi_synchronizecache10_task(iscsilun->iscsi, iscsilun->lun, 0, 0, 0,
                                       0, iscsi_co_generic_cb, &iTask) == NULL) {
-        return -EIO;
+        return -ENOMEM;
     }
 
     while (!iTask.complete) {
@@ -669,7 +669,7 @@ retry:
                                   sector_qemu2lun(sector_num, iscsilun),
                                   8 + 16, iscsi_co_generic_cb,
                                   &iTask) == NULL) {
-        ret = -EIO;
+        ret = -ENOMEM;
         goto out;
     }
 
@@ -753,7 +753,7 @@ coroutine_fn iscsi_co_discard(BlockDriverState *bs, int64_t sector_num,
 retry:
     if (iscsi_unmap_task(iscsilun->iscsi, iscsilun->lun, 0, 0, &list, 1,
                      iscsi_co_generic_cb, &iTask) == NULL) {
-        return -EIO;
+        return -ENOMEM;
     }
 
     while (!iTask.complete) {
@@ -822,7 +822,7 @@ retry:
                                iscsilun->zeroblock, iscsilun->block_size,
                                nb_blocks, 0, !!(flags & BDRV_REQ_MAY_UNMAP),
                                0, 0, iscsi_co_generic_cb, &iTask) == NULL) {
-        return -EIO;
+        return -ENOMEM;
     }
 
     while (!iTask.complete) {