mm: 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.

Link: https://lkml.kernel.org/r/20250812135225.274316-1-rongqianfeng@vivo.com
Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/damon/ops-common.c b/mm/damon/ops-common.c
index 2e3409a6c8a404dfac8c2b907b0769a83529e43d..998c5180a603472307c573ddcee8ac0b18770044 100644 (file)
--- a/mm/damon/ops-common.c
+++ b/mm/damon/ops-common.c
@@ -303,7 +303,7 @@ static unsigned int __damon_migrate_folio_list(
                 * instead of migrated.
                 */
                .gfp_mask = (GFP_HIGHUSER_MOVABLE & ~__GFP_RECLAIM) |
-                       __GFP_NOWARN | __GFP_NOMEMALLOC | GFP_NOWAIT,
+                       __GFP_NOMEMALLOC | GFP_NOWAIT,
                .nid = target_nid,
        };
 

diff --git a/mm/filemap.c b/mm/filemap.c
index 751838ef05e512d26ef353ba03dfed10e0bc312e..d1fb0b12bff27b9862143f01fabe58e7b7729aca 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1961,7 +1961,7 @@ no_page:
                        gfp &= ~__GFP_FS;
                if (fgp_flags & FGP_NOWAIT) {
                        gfp &= ~GFP_KERNEL;
-                       gfp |= GFP_NOWAIT | __GFP_NOWARN;
+                       gfp |= GFP_NOWAIT;
                }
                if (WARN_ON_ONCE(!(fgp_flags & (FGP_LOCK | FGP_FOR_MMAP))))
                        fgp_flags |= FGP_LOCK;

diff --git a/mm/mmu_gather.c b/mm/mmu_gather.c
index b49cc6385f1fd8768985b158edddc01581c0a454..374aa6f021c6b0e09bfcd1c31076edb479c4b268 100644 (file)
--- a/mm/mmu_gather.c
+++ b/mm/mmu_gather.c
@@ -32,7 +32,7 @@ static bool tlb_next_batch(struct mmu_gather *tlb)
        if (tlb->batch_count == MAX_GATHER_BATCH_COUNT)
                return false;
 
-       batch = (void *)__get_free_page(GFP_NOWAIT | __GFP_NOWARN);
+       batch = (void *)__get_free_page(GFP_NOWAIT);
        if (!batch)
                return false;
 
@@ -364,7 +364,7 @@ void tlb_remove_table(struct mmu_gather *tlb, void *table)
        struct mmu_table_batch **batch = &tlb->batch;
 
        if (*batch == NULL) {
-               *batch = (struct mmu_table_batch *)__get_free_page(GFP_NOWAIT | __GFP_NOWARN);
+               *batch = (struct mmu_table_batch *)__get_free_page(GFP_NOWAIT);
                if (*batch == NULL) {
                        tlb_table_invalidate(tlb);
                        tlb_remove_table_one(table);

diff --git a/mm/rmap.c b/mm/rmap.c
index 0e9c4041f86872e3270b4efb3fbe2bae7c527bcc..1c5988dbd1e74d20b46d8c32c64f4b57af2b8850 100644 (file)
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -285,7 +285,7 @@ int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src)
        list_for_each_entry_reverse(pavc, &src->anon_vma_chain, same_vma) {
                struct anon_vma *anon_vma;
 
-               avc = anon_vma_chain_alloc(GFP_NOWAIT | __GFP_NOWARN);
+               avc = anon_vma_chain_alloc(GFP_NOWAIT);
                if (unlikely(!avc)) {
                        unlock_anon_vma_root(root);
                        root = NULL;

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 8292735383e8aba112014dbbe608511a8642274d..4249e1e019479c29f8d348204663d6c5a0ecd39f 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -5196,7 +5196,7 @@ static void vmap_init_nodes(void)
        int n = clamp_t(unsigned int, num_possible_cpus(), 1, 128);
 
        if (n > 1) {
-               vn = kmalloc_array(n, sizeof(*vn), GFP_NOWAIT | __GFP_NOWARN);
+               vn = kmalloc_array(n, sizeof(*vn), GFP_NOWAIT);
                if (vn) {
                        /* Node partition is 16 pages. */
                        vmap_zone_size = (1 << 4) * PAGE_SIZE;