mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-28 00:35:01 +00:00
f0953a1bba
Fix ~94 single-word typos in locking code comments, plus a few very obvious grammar mistakes. Link: https://lkml.kernel.org/r/20210322212624.GA1963421@gmail.com Link: https://lore.kernel.org/r/20210322205203.GB1959563@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Cc: Bhaskar Chowdhury <unixbhaskar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_PGALLOC_TRACK_H
|
|
#define _LINUX_PGALLOC_TRACK_H
|
|
|
|
#if defined(CONFIG_MMU)
|
|
static inline p4d_t *p4d_alloc_track(struct mm_struct *mm, pgd_t *pgd,
|
|
unsigned long address,
|
|
pgtbl_mod_mask *mod_mask)
|
|
{
|
|
if (unlikely(pgd_none(*pgd))) {
|
|
if (__p4d_alloc(mm, pgd, address))
|
|
return NULL;
|
|
*mod_mask |= PGTBL_PGD_MODIFIED;
|
|
}
|
|
|
|
return p4d_offset(pgd, address);
|
|
}
|
|
|
|
static inline pud_t *pud_alloc_track(struct mm_struct *mm, p4d_t *p4d,
|
|
unsigned long address,
|
|
pgtbl_mod_mask *mod_mask)
|
|
{
|
|
if (unlikely(p4d_none(*p4d))) {
|
|
if (__pud_alloc(mm, p4d, address))
|
|
return NULL;
|
|
*mod_mask |= PGTBL_P4D_MODIFIED;
|
|
}
|
|
|
|
return pud_offset(p4d, address);
|
|
}
|
|
|
|
static inline pmd_t *pmd_alloc_track(struct mm_struct *mm, pud_t *pud,
|
|
unsigned long address,
|
|
pgtbl_mod_mask *mod_mask)
|
|
{
|
|
if (unlikely(pud_none(*pud))) {
|
|
if (__pmd_alloc(mm, pud, address))
|
|
return NULL;
|
|
*mod_mask |= PGTBL_PUD_MODIFIED;
|
|
}
|
|
|
|
return pmd_offset(pud, address);
|
|
}
|
|
#endif /* CONFIG_MMU */
|
|
|
|
#define pte_alloc_kernel_track(pmd, address, mask) \
|
|
((unlikely(pmd_none(*(pmd))) && \
|
|
(__pte_alloc_kernel(pmd) || ({*(mask)|=PGTBL_PMD_MODIFIED;0;})))?\
|
|
NULL: pte_offset_kernel(pmd, address))
|
|
|
|
#endif /* _LINUX_PGALLOC_TRACK_H */
|