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Commit 62045305 authored by Nick Piggin's avatar Nick Piggin Committed by Linus Torvalds
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[PATCH] mm: remove find_trylock_page 



Remove find_trylock_page as per the removal schedule.

Signed-off-by: default avatarNick Piggin <npiggin@suse.de>
[ Let's see if anybody screams ]
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f049274b

Documentation/feature-removal-schedule.txt

+0 −12
Original line number Diff line number Diff line
@@ -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

include/linux/pagemap.h

+0 −2
Original line number Diff line number Diff line
@@ -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,

mm/filemap.c

+0 −20
Original line number Diff line number Diff line
@@ -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