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xen
24466-libxc_Only_retry_mapping_pages_when_ENOEN...
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File 24466-libxc_Only_retry_mapping_pages_when_ENOENT_is_returned.patch of Package xen
changeset: 24466:fc78d16447b4 user: Andres Lagar-Cavilla <andres@lagarcavilla.org> date: Tue Jan 10 15:35:01 2012 +0000 files: tools/libxc/xc_linux_osdep.c description: libxc: Only retry mapping pages when ENOENT is returned If the return value from the ioctl() is not ENOENT, it's possible that err[i] will not be updated and libxc will just loop forever. Although it's unlikely that err[i] would not be updated after the ioctl() gets through at least once, it's better to be defensive. Signed-off-by: Adin Scannell <adin@scannell.ca> Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org> Committed-by: Ian Jackson <ian.jackson@eu.citrix.com> --- tools/libxc/xc_linux_osdep.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: xen-4.1.2-testing/tools/libxc/xc_linux_osdep.c =================================================================== --- xen-4.1.2-testing.orig/tools/libxc/xc_linux_osdep.c +++ xen-4.1.2-testing/tools/libxc/xc_linux_osdep.c @@ -208,7 +208,7 @@ static void *linux_privcmd_map_foreign_b do { usleep(100); rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH_V2, &ioctlx); - } while ( rc < 0 && err[i] == -ENOENT ); + } while ( rc < 0 && errno == ENOENT && err[i] == -ENOENT ); } }
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