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page-xfer: bug, don't open page-read for shmem

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it was error if come to that point from shmem.c
388L: err = open_page_xfer(&xfer, CR_FD_SHMEM_PAGEMAP, si->shmid);

Signed-off-by: Tikhomirov Pavel <snorcht@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Tikhomirov Pavel
2014-02-19 15:05:00 +04:00
committed by Pavel Emelyanov
parent b742c125fb
commit 3fdfbe20dd
1 changed files with 2 additions and 3 deletions
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5
page-xfer.c
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@@ -641,12 +641,11 @@ static int open_page_local_xfer(struct page_xfer *xfer, int fd_type, long id)
* 2) when writing a hole, the respective place would be checked * 2) when writing a hole, the respective place would be checked
* to exist in parent (either pagemap or hole) * to exist in parent (either pagemap or hole)
*/ */
{ xfer->parent = NULL;
if (fd_type == CR_FD_PAGEMAP) {
int ret; int ret;
int pfd; int pfd;
xfer->parent = NULL;
pfd = openat(get_service_fd(IMG_FD_OFF), CR_PARENT_LINK, O_RDONLY); pfd = openat(get_service_fd(IMG_FD_OFF), CR_PARENT_LINK, O_RDONLY);
if (pfd < 0 && errno == ENOENT) if (pfd < 0 && errno == ENOENT)
goto out; goto out;