linux-kernel - [PATCH] uprobes: Remove redundant __GFP

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Message-Id: <20250805025000.346647-1-rongqianfeng@vivo.com>
Date: Tue,  5 Aug 2025 10:50:00 +0800
From: Qianfeng Rong <rongqianfeng@...o.com>
To: Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	"Liang, Kan" <kan.liang@...ux.intel.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org
Cc: willy@...radead.org,
	Qianfeng Rong <rongqianfeng@...o.com>
Subject: [PATCH] uprobes: Remove redundant __GFP_NOWARN

Commit 16f5dfbc851b ("gfp: include __GFP_NOWARN in GFP_NOWAIT")
made GFP_NOWAIT implicitly include __GFP_NOWARN.

Therefore, explicit __GFP_NOWARN combined with GFP_NOWAIT
(e.g., `GFP_NOWAIT | __GFP_NOWARN`) is now redundant. Let's clean
up these redundant flags across subsystems.

No functional changes.

Signed-off-by: Qianfeng Rong <rongqianfeng@...o.com>
---
 kernel/events/uprobes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 7ca1940607bd..5d12b9fdc917 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1210,7 +1210,7 @@ build_map_info(struct address_space *mapping, loff_t offset, bool is_register)
 			 * reclaim. This is optimistic, no harm done if it fails.
 			 */
 			prev = kmalloc(sizeof(struct map_info),
-					GFP_NOWAIT | __GFP_NOMEMALLOC | __GFP_NOWARN);
+					GFP_NOWAIT | __GFP_NOMEMALLOC);
 			if (prev)
 				prev->next = NULL;
 		}
-- 
2.34.1