diff options
| author | Hugh Dickins <hugh@veritas.com> | 2005-10-29 18:16:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-10-29 21:40:40 -0700 |
| commit | 1bb3630e89cb8a7b3d3807629c20c5bad88290ff (patch) | |
| tree | 3d1fd73487ca66f227701b9530f2c76fcc6f9da4 /mm/mremap.c | |
| parent | 872fec16d9a0ed3b75b8893aa217e49cca575ee5 (diff) | |
[PATCH] mm: ptd_alloc inline and out
It seems odd to me that, whereas pud_alloc and pmd_alloc test inline, only
calling out-of-line __pud_alloc __pmd_alloc if allocation needed,
pte_alloc_map and pte_alloc_kernel are entirely out-of-line. Though it does
add a little to kernel size, change them to macros testing inline, calling
__pte_alloc or __pte_alloc_kernel to allocate out-of-line. Mark none of them
as fastcalls, leave that to CONFIG_REGPARM or not.
It also seems more natural for the out-of-line functions to leave the offset
calculation and map to the inline, which has to do it anyway for the common
case. At least mremap move wants __pte_alloc without _map.
Macros rather than inline functions, certainly to avoid the header file issues
which arise from CONFIG_HIGHPTE needing kmap_types.h, but also in case any
architectures I haven't built would have other such problems.
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 | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/mm/mremap.c b/mm/mremap.c index ccf45647702..616facc3d28 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -51,7 +51,6 @@ static pmd_t *alloc_new_pmd(struct mm_struct *mm, unsigned long addr) pgd_t *pgd; pud_t *pud; pmd_t *pmd = NULL; - pte_t *pte; /* * We do need page_table_lock: because allocators expect that. @@ -66,12 +65,8 @@ static pmd_t *alloc_new_pmd(struct mm_struct *mm, unsigned long addr) if (!pmd) goto out; - pte = pte_alloc_map(mm, pmd, addr); - if (!pte) { + if (!pmd_present(*pmd) && __pte_alloc(mm, pmd, addr)) pmd = NULL; - goto out; - } - pte_unmap(pte); out: spin_unlock(&mm->page_table_lock); return pmd; |