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v2 page-read: Check parent pagemap read return value

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Signed-off-by: Tikhomirov Pavel <snorcht@gmail.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
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Tikhomirov Pavel 2013-12-02 15:28:59 +04:00 • committed by Pavel Emelyanov
parent 654131626e
commit 7be5a1b95d
1 changed files with 2 additions and 0 deletions
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2
page-read.c
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@ -122,6 +122,8 @@ static int read_pagemap_page(struct page_read *pr, unsigned long vaddr, void *bu
if (pr->pe->in_parent) {
pr_debug("\tpr%u Read page %lx from parent\n", pr->id, vaddr);
ret = read_pagemap_page_from_parent(pr->parent, vaddr, buf);
if (ret == -1)
return ret;
} else {
pr_debug("\tpr%u Read page %lx from self %lx/%"PRIx64"\n", pr->id,
vaddr, pr->cvaddr, lseek(pr->fd_pg, 0, SEEK_CUR));