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rbd: work around -Wuninitialized warning
gcc -O3 warns about a dummy variable that is passed down into rbd_img_fill_nodata without being initialized: drivers/block/rbd.c: In function 'rbd_img_fill_nodata': drivers/block/rbd.c:2573:13: error: 'dummy' is used uninitialized in this function [-Werror=uninitialized] fctx->iter = *fctx->pos; Since this is a dummy, I assume the warning is harmless, but it's better to initialize it anyway and avoid the warning. Fixes: mmtom ("init/Kconfig: enable -O3 for all arches") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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@ -2662,7 +2662,7 @@ static int rbd_img_fill_nodata(struct rbd_img_request *img_req,
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u64 off, u64 len)
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u64 off, u64 len)
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{
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{
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struct ceph_file_extent ex = { off, len };
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struct ceph_file_extent ex = { off, len };
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union rbd_img_fill_iter dummy;
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union rbd_img_fill_iter dummy = {};
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struct rbd_img_fill_ctx fctx = {
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struct rbd_img_fill_ctx fctx = {
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.pos_type = OBJ_REQUEST_NODATA,
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.pos_type = OBJ_REQUEST_NODATA,
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.pos = &dummy,
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.pos = &dummy,
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