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| author | Qian Cai <cai@lca.pw> | 2019-03-05 15:50:00 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 21:07:21 -0800 |
| commit | 70516b936bb0afac4fa2fc54a5e61870ece998da (patch) | |
| tree | 43a90b1c67815bf0a3d44ae697256ee82bed79bf /mm/huge_memory.c | |
| parent | cd02cf1aceeac5b0bbbb2d6fbf614c987dcd396f (diff) | |
| download | blackbird-op-linux-70516b936bb0afac4fa2fc54a5e61870ece998da.tar.gz blackbird-op-linux-70516b936bb0afac4fa2fc54a5e61870ece998da.zip | |
mm/huge_memory.c: fix "orig_pud" set but not used
Commit a00cc7d9dd93 ("mm, x86: add support for PUD-sized transparent
hugepages") introduced pudp_huge_get_and_clear_full() but no one uses
its return code.
In order to not diverge from pmdp_huge_get_and_clear_full(), just change
zap_huge_pud() to not assign the return value from
pudp_huge_get_and_clear_full().
mm/huge_memory.c: In function 'zap_huge_pud':
mm/huge_memory.c:1982:8: warning: variable 'orig_pud' set but not used [-Wunused-but-set-variable]
pud_t orig_pud;
^~~~~~~~
Link: http://lkml.kernel.org/r/20190301221956.97493-1-cai@lca.pw
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index fcf657886b4b..404acdcd0455 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1982,7 +1982,6 @@ spinlock_t *__pud_trans_huge_lock(pud_t *pud, struct vm_area_struct *vma) int zap_huge_pud(struct mmu_gather *tlb, struct vm_area_struct *vma, pud_t *pud, unsigned long addr) { - pud_t orig_pud; spinlock_t *ptl; ptl = __pud_trans_huge_lock(pud, vma); @@ -1994,8 +1993,7 @@ int zap_huge_pud(struct mmu_gather *tlb, struct vm_area_struct *vma, * pgtable_trans_huge_withdraw after finishing pudp related * operations. */ - orig_pud = pudp_huge_get_and_clear_full(tlb->mm, addr, pud, - tlb->fullmm); + pudp_huge_get_and_clear_full(tlb->mm, addr, pud, tlb->fullmm); tlb_remove_pud_tlb_entry(tlb, pud, addr); if (vma_is_dax(vma)) { spin_unlock(ptl); |
