diff options
| author |   Wei Yang <richardw.yang@linux.intel.com> | 2019-11-30 17:57:02 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 12:59:08 -0800 |
| commit | 188b04a7d93860fd100b2671600b8ad81fb0a842 (patch) | |
| tree | f256acc385ead045dbf43471f121338998002b26 /mm | |
| parent | hugetlb: remove duplicated code (diff) | |
| download | linux-dev-188b04a7d93860fd100b2671600b8ad81fb0a842.tar.xz linux-dev-188b04a7d93860fd100b2671600b8ad81fb0a842.zip | |
hugetlb: remove unused hstate in hugetlb_fault_mutex_hash()
The first parameter hstate in function hugetlb_fault_mutex_hash() is not
used anymore.
This patch removes it.
[akpm@linux-foundation.org: various build fixes]
[cai@lca.pw: fix a GCC compilation warning]
Link: http://lkml.kernel.org/r/1570544108-32331-1-git-send-email-cai@lca.pw
Link: http://lkml.kernel.org/r/20191005003302.785-1-richardw.yang@linux.intel.com
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: Qian Cai <cai@lca.pw>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/hugetlb.c | 10 | ||||
| -rw-r--r-- | mm/userfaultfd.c | 5 |
2 files changed, 5 insertions, 10 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index a8e43aa9c670..8624b7758abb 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3796,7 +3796,7 @@ retry: * handling userfault. Reacquire after handling * fault to make calling code simpler. */ - hash = hugetlb_fault_mutex_hash(h, mapping, idx); + hash = hugetlb_fault_mutex_hash(mapping, idx); mutex_unlock(&hugetlb_fault_mutex_table[hash]); ret = handle_userfault(&vmf, VM_UFFD_MISSING); mutex_lock(&hugetlb_fault_mutex_table[hash]); @@ -3923,8 +3923,7 @@ backout_unlocked: } #ifdef CONFIG_SMP -u32 hugetlb_fault_mutex_hash(struct hstate *h, struct address_space *mapping, - pgoff_t idx) +u32 hugetlb_fault_mutex_hash(struct address_space *mapping, pgoff_t idx) { unsigned long key[2]; u32 hash; @@ -3941,8 +3940,7 @@ u32 hugetlb_fault_mutex_hash(struct hstate *h, struct address_space *mapping, * For uniprocesor systems we always use a single mutex, so just * return 0 and avoid the hashing overhead. */ -u32 hugetlb_fault_mutex_hash(struct hstate *h, struct address_space *mapping, - pgoff_t idx) +u32 hugetlb_fault_mutex_hash(struct address_space *mapping, pgoff_t idx) { return 0; } @@ -3986,7 +3984,7 @@ vm_fault_t hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma, * get spurious allocation failures if two CPUs race to instantiate * the same page in the page cache. */ - hash = hugetlb_fault_mutex_hash(h, mapping, idx); + hash = hugetlb_fault_mutex_hash(mapping, idx); mutex_lock(&hugetlb_fault_mutex_table[hash]); entry = huge_ptep_get(ptep); diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index 640ff2bd9a69..6d152741bb26 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -184,7 +184,6 @@ static __always_inline ssize_t __mcopy_atomic_hugetlb(struct mm_struct *dst_mm, unsigned long src_addr, dst_addr; long copied; struct page *page; - struct hstate *h; unsigned long vma_hpagesize; pgoff_t idx; u32 hash; @@ -256,8 +255,6 @@ retry: goto out_unlock; } - h = hstate_vma(dst_vma); - while (src_addr < src_start + len) { pte_t dst_pteval; @@ -269,7 +266,7 @@ retry: */ idx = linear_page_index(dst_vma, dst_addr); mapping = dst_vma->vm_file->f_mapping; - hash = hugetlb_fault_mutex_hash(h, mapping, idx); + hash = hugetlb_fault_mutex_hash(mapping, idx); mutex_lock(&hugetlb_fault_mutex_table[hash]); err = -ENOMEM; |