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maps4: move is_swap_pte 

Move is_swap_pte helper function to swapops.h for use by pagemap code

Signed-off-by: Matt Mackall <mpm@selenic.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matt Mackall 2008-02-04 22:29:00 -08:00 committed by Linus Torvalds
parent 8245525741
commit 698dd4ba6b
2 changed files with 6 additions and 5 deletions
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6
include/linux/swapops.h
View File

@ -42,6 +42,12 @@ static inline pgoff_t swp_offset(swp_entry_t entry)
return entry.val & SWP_OFFSET_MASK(entry);
}
/* check whether a pte points to a swap entry */
static inline int is_swap_pte(pte_t pte)
{
return !pte_none(pte) && !pte_present(pte) && !pte_file(pte);
}
/*
* Convert the arch-dependent pte representation of a swp_entry_t into an
* arch-independent swp_entry_t.

5
mm/migrate.c
View File

@ -115,11 +115,6 @@ int putback_lru_pages(struct list_head *l)
return count;
}
static inline int is_swap_pte(pte_t pte)
{
return !pte_none(pte) && !pte_present(pte) && !pte_file(pte);
}
/*
* Restore a potential migration pte to a working pte entry
*/