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From: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
To: Goldwyn Rodrigues <rgoldwyn-l3A5Bk7waGM@public.gmane.org>
Cc: linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	jack-IBi9RG/b67k@public.gmane.org,
	hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
	linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
	linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org
Subject: Re: [PATCH 0/10 v12] No wait AIO
Date: Thu, 15 Jun 2017 15:01:00 -0700	[thread overview]
Message-ID: <20170615150100.52c0387406e6ce5167dc098e@linux-foundation.org> (raw)
In-Reply-To: <1003b3e8-a775-e8ac-d1ca-11055d941a98-l3A5Bk7waGM@public.gmane.org>

On Thu, 15 Jun 2017 16:51:41 -0500 Goldwyn Rodrigues <rgoldwyn-l3A5Bk7waGM@public.gmane.org> wrote:

> > I have only minor quibbles - I'll grab the patch series for some -next
> > testing (at least).
> > 
> 
> I agree to the quibbles you have on patch 02/10. Should I send the
> entire fixed series, just the 02/10 patch, or would you prefer to fix it?

This?

--- a/include/linux/fs.h~fs-introduce-filemap_range_has_page-fix
+++ a/include/linux/fs.h
@@ -2517,8 +2517,8 @@ extern int filemap_fdatawait(struct addr
 extern void filemap_fdatawait_keep_errors(struct address_space *);
 extern int filemap_fdatawait_range(struct address_space *, loff_t lstart,
 				   loff_t lend);
-extern int filemap_range_has_page(struct address_space *, loff_t lstart,
-				  loff_t lend);
+extern bool filemap_range_has_page(struct address_space *, loff_t lstart,
+				   loff_t lend);
 extern int filemap_write_and_wait(struct address_space *mapping);
 extern int filemap_write_and_wait_range(struct address_space *mapping,
 				        loff_t lstart, loff_t lend);
diff -puN mm/filemap.c~fs-introduce-filemap_range_has_page-fix mm/filemap.c
--- a/mm/filemap.c~fs-introduce-filemap_range_has_page-fix
+++ a/mm/filemap.c
@@ -378,31 +378,30 @@ EXPORT_SYMBOL(filemap_flush);
 
 /**
  * filemap_range_has_page - check if a page exists in range.
- * @mapping:           address space structure to wait for
+ * @mapping:           address space within which to check
  * @start_byte:        offset in bytes where the range starts
  * @end_byte:          offset in bytes where the range ends (inclusive)
  *
  * Find at least one page in the range supplied, usually used to check if
  * direct writing in this range will trigger a writeback.
  */
-int filemap_range_has_page(struct address_space *mapping,
-			   loff_t start_byte, loff_t end_byte)
+bool filemap_range_has_page(struct address_space *mapping,
+			    loff_t start_byte, loff_t end_byte)
 {
 	pgoff_t index = start_byte >> PAGE_SHIFT;
 	pgoff_t end = end_byte >> PAGE_SHIFT;
 	struct pagevec pvec;
-	int ret;
+	bool ret;
 
 	if (end_byte < start_byte)
-		return 0;
+		return false;
 
 	if (mapping->nrpages == 0)
-		return 0;
+		return false;
 
 	pagevec_init(&pvec, 0);
-	ret = pagevec_lookup(&pvec, mapping, index, 1);
-	if (!ret)
-		return 0;
+	if (!pagevec_lookup(&pvec, mapping, index, 1))
+		return false;
 	ret = (pvec.pages[0]->index <= end);
 	pagevec_release(&pvec);
 	return ret;
_

  parent reply	other threads:[~2017-06-15 22:01 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-15 15:59 [PATCH 0/10 v12] No wait AIO Goldwyn Rodrigues
2017-06-15 15:59 ` [PATCH 01/10] fs: Separate out kiocb flags setup based on RWF_* flags Goldwyn Rodrigues
2017-06-15 15:59 ` [PATCH 02/10] fs: Introduce filemap_range_has_page() Goldwyn Rodrigues
     [not found]   ` <20170615160002.17233-3-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-06-15 18:25     ` Andrew Morton
2017-06-15 15:59 ` [PATCH 03/10] fs: Use RWF_* flags for AIO operations Goldwyn Rodrigues
2017-06-15 15:59 ` [PATCH 04/10] fs: Introduce RWF_NOWAIT and FMODE_AIO_NOWAIT Goldwyn Rodrigues
     [not found]   ` <20170615160002.17233-5-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-06-17  4:09     ` Al Viro
2017-06-17 11:53       ` Christoph Hellwig
2017-06-15 15:59 ` [PATCH 05/10] fs: return if direct write will trigger writeback Goldwyn Rodrigues
     [not found] ` <20170615160002.17233-1-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-06-15 15:59   ` [PATCH 06/10] fs: Introduce IOMAP_NOWAIT Goldwyn Rodrigues
2017-06-15 18:25   ` [PATCH 0/10 v12] No wait AIO Andrew Morton
2017-06-15 21:51     ` Goldwyn Rodrigues
     [not found]       ` <1003b3e8-a775-e8ac-d1ca-11055d941a98-l3A5Bk7waGM@public.gmane.org>
2017-06-15 22:01         ` Andrew Morton [this message]
     [not found]           ` <20170615150100.52c0387406e6ce5167dc098e-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2017-06-15 23:49             ` Goldwyn Rodrigues
2017-06-16  8:54     ` Jan Kara
2017-06-15 15:59 ` [PATCH 07/10] block: return on congested block device Goldwyn Rodrigues
2017-06-15 16:42   ` Jens Axboe
2017-06-15 16:00 ` [PATCH 08/10] ext4: nowait aio support Goldwyn Rodrigues
2017-06-15 16:00 ` [PATCH 09/10] xfs: " Goldwyn Rodrigues
2017-06-15 16:00 ` [PATCH 10/10] btrfs: " Goldwyn Rodrigues

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