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[PATCH] mm: remove find_trylock_page

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Remove find_trylock_page as per the removal schedule.

Signed-off-by: Nick Piggin <npiggin@suse.de>
[ Let's see if anybody screams ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nick Piggin 2007-02-09 05:28:19 +01:00 committed by Linus Torvalds
parent f049274b01
commit 62045305c2
3 changed files with 0 additions and 34 deletions
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12
Documentation/feature-removal-schedule.txt
View file

@ -186,18 +186,6 @@ Who: Greg Kroah-Hartman <gregkh@suse.de>
---------------------------
What: find_trylock_page
When: January 2007
Why: The interface no longer has any callers left in the kernel. It
is an odd interface (compared with other find_*_page functions), in
that it does not take a refcount to the page, only the page lock.
It should be replaced with find_get_page or find_lock_page if possible.
This feature removal can be reevaluated if users of the interface
cannot cleanly use something else.
Who: Nick Piggin <npiggin@suse.de>
---------------------------
What: Interrupt only SA_* flags
When: Januar 2007
Why: The interrupt related SA_* flags are replaced by IRQF_* to move them

2
include/linux/pagemap.h
View file

@ -76,8 +76,6 @@ extern struct page * find_get_page(struct address_space *mapping,
unsigned long index);
extern struct page * find_lock_page(struct address_space *mapping,
unsigned long index);
extern __deprecated_for_modules struct page * find_trylock_page(
struct address_space *mapping, unsigned long index);
extern struct page * find_or_create_page(struct address_space *mapping,
unsigned long index, gfp_t gfp_mask);
unsigned find_get_pages(struct address_space *mapping, pgoff_t start,

20
mm/filemap.c
View file

@ -605,26 +605,6 @@ struct page * find_get_page(struct address_space *mapping, unsigned long offset)
}
EXPORT_SYMBOL(find_get_page);
/**
* find_trylock_page - find and lock a page
* @mapping: the address_space to search
* @offset: the page index
*
* Same as find_get_page(), but trylock it instead of incrementing the count.
*/
struct page *find_trylock_page(struct address_space *mapping, unsigned long offset)
{
struct page *page;
read_lock_irq(&mapping->tree_lock);
page = radix_tree_lookup(&mapping->page_tree, offset);
if (page && TestSetPageLocked(page))
page = NULL;
read_unlock_irq(&mapping->tree_lock);
return page;
}
EXPORT_SYMBOL(find_trylock_page);
/**
* find_lock_page - locate, pin and lock a pagecache page
* @mapping: the address_space to search