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authorPeter Xu <peterx@redhat.com>2020-08-11 18:39:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-12 10:58:04 -0700
commit64019a2e467a288a16b65ab55ddcbf58c1b00187 (patch)
tree6c4272bf0188188b63023858edf85786a8f54817 /include
parenta2beb5f1efede6924a4258462a5660572e6ca864 (diff)
downloadlinux-64019a2e467a288a16b65ab55ddcbf58c1b00187.tar.gz
mm/gup: remove task_struct pointer for all gup code
After the cleanup of page fault accounting, gup does not need to pass
task_struct around any more.  Remove that parameter in the whole gup
stack.

Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Link: http://lkml.kernel.org/r/20200707225021.200906-26-peterx@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/mm.h9
1 files changed, 4 insertions, 5 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index ec0ffb423769..e7602a3bcef1 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1661,7 +1661,7 @@ int invalidate_inode_page(struct page *page);
 extern vm_fault_t handle_mm_fault(struct vm_area_struct *vma,
 				  unsigned long address, unsigned int flags,
 				  struct pt_regs *regs);
-extern int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm,
+extern int fixup_user_fault(struct mm_struct *mm,
 			    unsigned long address, unsigned int fault_flags,
 			    bool *unlocked);
 void unmap_mapping_pages(struct address_space *mapping,
@@ -1677,8 +1677,7 @@ static inline vm_fault_t handle_mm_fault(struct vm_area_struct *vma,
 	BUG();
 	return VM_FAULT_SIGBUS;
 }
-static inline int fixup_user_fault(struct task_struct *tsk,
-		struct mm_struct *mm, unsigned long address,
+static inline int fixup_user_fault(struct mm_struct *mm, unsigned long address,
 		unsigned int fault_flags, bool *unlocked)
 {
 	/* should never happen if there's no MMU */
@@ -1704,11 +1703,11 @@ extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
 extern int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
 		unsigned long addr, void *buf, int len, unsigned int gup_flags);
 
-long get_user_pages_remote(struct task_struct *tsk, struct mm_struct *mm,
+long get_user_pages_remote(struct mm_struct *mm,
 			    unsigned long start, unsigned long nr_pages,
 			    unsigned int gup_flags, struct page **pages,
 			    struct vm_area_struct **vmas, int *locked);
-long pin_user_pages_remote(struct task_struct *tsk, struct mm_struct *mm,
+long pin_user_pages_remote(struct mm_struct *mm,
 			   unsigned long start, unsigned long nr_pages,
 			   unsigned int gup_flags, struct page **pages,
 			   struct vm_area_struct **vmas, int *locked);