diff options
| author | Hugh Dickins <hugh@veritas.com> | 2005-10-29 18:16:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-29 21:40:39 -0700 |
| commit | d0de32d9b71e11cc51618c2045086e9694093d01 (patch) | |
| tree | 38b9d22e52f1c2e9d378e5c2cdd92904173134fd /mm/mremap.c | |
| parent | 9e9bef07ce5a342aa6246ebc5c20829d0d5d63d0 (diff) | |
| download | lwn-d0de32d9b71e11cc51618c2045086e9694093d01.tar.gz lwn-d0de32d9b71e11cc51618c2045086e9694093d01.zip | |
[PATCH] mm: do_mremap current mm
Cleanup: relieve do_mremap from its surfeit of current->mms.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/mremap.c')
| -rw-r--r-- | mm/mremap.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/mm/mremap.c b/mm/mremap.c index f4e562098500..318eea5467a0 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -245,6 +245,7 @@ unsigned long do_mremap(unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags, unsigned long new_addr) { + struct mm_struct *mm = current->mm; struct vm_area_struct *vma; unsigned long ret = -EINVAL; unsigned long charged = 0; @@ -285,7 +286,7 @@ unsigned long do_mremap(unsigned long addr, if ((addr <= new_addr) && (addr+old_len) > new_addr) goto out; - ret = do_munmap(current->mm, new_addr, new_len); + ret = do_munmap(mm, new_addr, new_len); if (ret) goto out; } @@ -296,7 +297,7 @@ unsigned long do_mremap(unsigned long addr, * do_munmap does all the needed commit accounting */ if (old_len >= new_len) { - ret = do_munmap(current->mm, addr+new_len, old_len - new_len); + ret = do_munmap(mm, addr+new_len, old_len - new_len); if (ret && old_len != new_len) goto out; ret = addr; @@ -309,7 +310,7 @@ unsigned long do_mremap(unsigned long addr, * Ok, we need to grow.. or relocate. */ ret = -EFAULT; - vma = find_vma(current->mm, addr); + vma = find_vma(mm, addr); if (!vma || vma->vm_start > addr) goto out; if (is_vm_hugetlb_page(vma)) { @@ -325,14 +326,14 @@ unsigned long do_mremap(unsigned long addr, } if (vma->vm_flags & VM_LOCKED) { unsigned long locked, lock_limit; - locked = current->mm->locked_vm << PAGE_SHIFT; + locked = mm->locked_vm << PAGE_SHIFT; lock_limit = current->signal->rlim[RLIMIT_MEMLOCK].rlim_cur; locked += new_len - old_len; ret = -EAGAIN; if (locked > lock_limit && !capable(CAP_IPC_LOCK)) goto out; } - if (!may_expand_vm(current->mm, (new_len - old_len) >> PAGE_SHIFT)) { + if (!may_expand_vm(mm, (new_len - old_len) >> PAGE_SHIFT)) { ret = -ENOMEM; goto out; } @@ -359,11 +360,10 @@ unsigned long do_mremap(unsigned long addr, vma_adjust(vma, vma->vm_start, addr + new_len, vma->vm_pgoff, NULL); - current->mm->total_vm += pages; - vm_stat_account(vma->vm_mm, vma->vm_flags, - vma->vm_file, pages); + mm->total_vm += pages; + vm_stat_account(mm, vma->vm_flags, vma->vm_file, pages); if (vma->vm_flags & VM_LOCKED) { - current->mm->locked_vm += pages; + mm->locked_vm += pages; make_pages_present(addr + old_len, addr + new_len); } |