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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 4/4] copy_file: call discard_range on destination file
Date: Fri, 14 Feb 2020 12:16:41 +0100	[thread overview]
Message-ID: <20200214111641.6350-4-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20200214111641.6350-1-s.hauer@pengutronix.de>

discard the range in the output file we are going to overwrite anyway.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 lib/libfile.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/libfile.c b/lib/libfile.c
index 5a1817e32a..dbeed12ccd 100644
--- a/lib/libfile.c
+++ b/lib/libfile.c
@@ -367,6 +367,8 @@ int copy_file(const char *src, const char *dst, int verbose)
 		goto out;
 	}
 
+	discard_range(dstfd, srcstat.st_size, 0);
+
 	if (verbose) {
 		if (stat(src, &srcstat) < 0)
 			srcstat.st_size = 0;
-- 
2.25.0


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  parent reply	other threads:[~2020-02-14 11:16 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-14 11:16 [PATCH 1/4] fs: Introduce discard_range() Sascha Hauer
2020-02-14 11:16 ` [PATCH 2/4] cdev: Add discard_range hook Sascha Hauer
2020-02-14 11:16 ` [PATCH 3/4] block: Implement discard_range Sascha Hauer
2020-02-14 11:16 ` Sascha Hauer [this message]
  -- strict thread matches above, loose matches on Subject: below --
2019-12-13 13:20 [PATCH 0/4] add discard_range to improve write speed on block devices Sascha Hauer
2019-12-13 13:20 ` [PATCH 4/4] copy_file: call discard_range on destination file Sascha Hauer

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