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ltp/fsstress: don't fail on io_uring ENOSYS

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We might have URING #defined at build time, but be running on a kernel
which does not support it.

For that reason, we should not exit with an error if
io_uring_queue_init() fails with ENOSYS. We can just note the lack of
support and skip all future io_uring operations.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
This commit is contained in:
Eric Sandeen
2021-01-28 15:31:40 -06:00
committed by Eryu Guan
parent 44a1fbf786
commit d15b1721f2
1 changed files with 14 additions and 3 deletions
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ltp/fsstress.c
+14 -3
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@@ -35,6 +35,7 @@ io_context_t io_ctx;
#include <liburing.h>
#define URING_ENTRIES 1
struct io_uring ring;
bool have_io_uring; /* to indicate runtime availability */
#endif
#include <sys/syscall.h>
#include <sys/xattr.h>
@@ -706,9 +707,15 @@ int main(int argc, char **argv)
}
#endif
#ifdef URING
have_io_uring = true;
/* If ENOSYS, just ignore uring, other errors are fatal. */
if (io_uring_queue_init(URING_ENTRIES, &ring, 0)) {
fprintf(stderr, "io_uring_queue_init failed\n");
exit(1);
if (errno == ENOSYS) {
have_io_uring = false;
} else {
fprintf(stderr, "io_uring_queue_init failed\n");
exit(1);
}
}
#endif
for (i = 0; !loops || (i < loops); i++)
@@ -720,7 +727,8 @@ int main(int argc, char **argv)
}
#endif
#ifdef URING
io_uring_queue_exit(&ring);
if (have_io_uring)
io_uring_queue_exit(&ring);
#endif
cleanup_flist();
free(freq_table);
@@ -2208,6 +2216,9 @@ do_uring_rw(int opno, long r, int flags)
struct iovec iovec;
int iswrite = (flags & (O_WRONLY | O_RDWR)) ? 1 : 0;
if (!have_io_uring)
return;
init_pathname(&f);
if (!get_fname(FT_REGFILE, r, &f, NULL, NULL, &v)) {
if (v)