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From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: akpm@linux-foundation.org, linux-fsdevel@vger.kernel.org,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Yu Zhao <yuzhao@google.com>, Christoph Hellwig <hch@lst.de>,
	David Howells <dhowells@redhat.com>
Subject: Re: [PATCH v12 11/33] mm/lru: Add folio LRU functions
Date: Mon, 28 Jun 2021 15:40:50 +0300	[thread overview]
Message-ID: <20210628124050.6xa7m6n362hst2op@box.shutemov.name> (raw)
In-Reply-To: <20210622114118.3388190-12-willy@infradead.org>

On Tue, Jun 22, 2021 at 12:40:56PM +0100, Matthew Wilcox (Oracle) wrote:
> Handle arbitrary-order folios being added to the LRU.  By definition,
> all pages being added to the LRU were already head or base pages,
> so define page wrappers around folio functions where the original
> page functions involved calling compound_head() to manipulate flags,
> but define folio wrappers around page functions where there's no need to
> call compound_head().  The one thing that does change for those functions
> is calling compound_nr() instead of thp_nr_pages(), in order to handle
> arbitrary-sized folios.
> 
> Saves 783 bytes of kernel text; no functions grow.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> Reviewed-by: Yu Zhao <yuzhao@google.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: David Howells <dhowells@redhat.com>

Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

-- 
 Kirill A. Shutemov

  reply	other threads:[~2021-06-28 12:40 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-22 11:40 [PATCH v12 00/33] Memory folios Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 01/33] mm: Convert get_page_unless_zero() to return bool Matthew Wilcox (Oracle)
2021-06-23  7:46   ` Christoph Hellwig
2021-06-28 12:35   ` Kirill A. Shutemov
2021-06-22 11:40 ` [PATCH v12 02/33] mm: Introduce struct folio Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 03/33] mm: Add folio_pgdat(), folio_zone() and folio_zonenum() Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 04/33] mm/vmstat: Add functions to account folio statistics Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 05/33] mm/debug: Add VM_BUG_ON_FOLIO() and VM_WARN_ON_ONCE_FOLIO() Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 06/33] mm: Add folio reference count functions Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 07/33] mm: Add folio_put() Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 08/33] mm: Add folio_get() Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 09/33] mm: Add folio_try_get_rcu() Matthew Wilcox (Oracle)
2021-06-28 12:38   ` Kirill A. Shutemov
2021-06-22 11:40 ` [PATCH v12 10/33] mm: Add folio flag manipulation functions Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 11/33] mm/lru: Add folio LRU functions Matthew Wilcox (Oracle)
2021-06-28 12:40   ` Kirill A. Shutemov [this message]
2021-06-22 11:40 ` [PATCH v12 12/33] mm: Handle per-folio private data Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 13/33] mm/filemap: Add folio_index(), folio_file_page() and folio_contains() Matthew Wilcox (Oracle)
2021-06-22 11:40 ` [PATCH v12 14/33] mm/filemap: Add folio_next_index() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 15/33] mm/filemap: Add folio_pos() and folio_file_pos() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 16/33] mm/util: Add folio_mapping() and folio_file_mapping() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 17/33] mm/memcg: Add folio wrappers for various functions Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 18/33] mm/filemap: Add folio_unlock() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 19/33] mm/filemap: Add folio_lock() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 20/33] mm/filemap: Add folio_lock_killable() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 21/33] mm/filemap: Add __folio_lock_async() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 22/33] mm/filemap: Add folio_wait_locked() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 23/33] mm/filemap: Add __folio_lock_or_retry() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 24/33] mm/swap: Add folio_rotate_reclaimable() Matthew Wilcox (Oracle)
2021-06-28 12:46   ` Kirill A. Shutemov
2021-06-22 11:41 ` [PATCH v12 25/33] mm/filemap: Add folio_end_writeback() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 26/33] mm/writeback: Add folio_wait_writeback() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 27/33] mm/writeback: Add folio_wait_stable() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 28/33] mm/filemap: Add folio_wait_bit() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 29/33] mm/filemap: Add folio_wake_bit() Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 30/33] mm/filemap: Convert page wait queues to be folios Matthew Wilcox (Oracle)
2021-06-22 11:41 ` [PATCH v12 31/33] mm/filemap: Add folio private_2 functions Matthew Wilcox (Oracle)
2021-06-28 12:47   ` Kirill A. Shutemov
2021-06-22 11:41 ` [PATCH v12 32/33] fs/netfs: Add folio fscache functions Matthew Wilcox (Oracle)
2021-06-28 12:49   ` Kirill A. Shutemov
2021-06-22 11:41 ` [PATCH v12 33/33] mm: Add folio_mapped() Matthew Wilcox (Oracle)
2021-06-28 12:51   ` Kirill A. Shutemov

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