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Subject[ammarfaizi2-block:dhowells/linux-fs/netfs-linked-list 37/59] fs/netfs/output.c:274:32: warning: unused variable 'cookie'
tree:   https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/netfs-linked-list
head: 22ecc2fcdab4616e624408911ec1d54644e82030
commit: 5c1c3ba2afbf95dfbd1cb36cae7a28e20c4eaace [37/59] netfs: Dispatch write requests to process a writeback slice
config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20220602/202206020506.JJRuspb2-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-1) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/ammarfaizi2/linux-block/commit/5c1c3ba2afbf95dfbd1cb36cae7a28e20c4eaace
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/netfs-linked-list
git checkout 5c1c3ba2afbf95dfbd1cb36cae7a28e20c4eaace
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/netfs/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

fs/netfs/output.c: In function 'netfs_set_up_write_to_cache':
>> fs/netfs/output.c:274:32: warning: unused variable 'cookie' [-Wunused-variable]
274 | struct fscache_cookie *cookie = netfs_i_cookie(wreq->inode);
| ^~~~~~


vim +/cookie +274 fs/netfs/output.c

266
267 /*
268 * Set up a op for writing to the cache.
269 */
270 static void netfs_set_up_write_to_cache(struct netfs_io_request *wreq)
271 {
272 struct netfs_cache_resources *cres;
273 struct netfs_io_subrequest *subreq;
> 274 struct fscache_cookie *cookie = netfs_i_cookie(wreq->inode);
275 loff_t start = wreq->first * PAGE_SIZE;
276 size_t len = (wreq->last - wreq->first + 1) * PAGE_SIZE;
277 int ret;
278
279 if (!fscache_cookie_enabled(cookie)) {
280 clear_bit(NETFS_RREQ_WRITE_TO_CACHE, &wreq->flags);
281 return;
282 }
283
284 _debug("write to cache");
285 subreq = netfs_create_write_request(wreq, NETFS_WRITE_TO_CACHE, start, len,
286 netfs_write_to_cache_op_worker);
287 if (!subreq)
288 return;
289
290 cres = &wreq->cache_resources;
291 ret = -ENOBUFS;
292 if (wreq->netfs_ops->begin_cache_operation)
293 ret = wreq->netfs_ops->begin_cache_operation(wreq);
294 if (ret < 0) {
295 netfs_write_subrequest_terminated(subreq, ret, false);
296 return;
297 }
298
299 ret = cres->ops->prepare_write(cres, &start, &len, i_size_read(wreq->inode),
300 true);
301 if (ret < 0) {
302 netfs_write_subrequest_terminated(subreq, ret, false);
303 return;
304 }
305
306 netfs_queue_write_request(subreq);
307 }
308

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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