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* [PATCH] libfdisk: fdisk_deassign_device: only sync(2) blockdevs
@ 2024-01-13 22:35 наб
  2024-01-15  9:40 ` Karel Zak
  0 siblings, 1 reply; 2+ messages in thread
From: наб @ 2024-01-13 22:35 UTC (permalink / raw)
  To: util-linux

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When not editing a blockdev, syncing disks provides no benefit
(we already fsync() above), takes a long time,
and affects unrelated caches.

BLKRRPART is similarly gated on !S_ISBLK(st_mode) in
fdisk_reread_partition_table.
---
Based on the 2.39 tarball.

diff '--color=auto' -ru util-linux-2.39.orig/libfdisk/src/context.c util-linux-2.39/libfdisk/src/context.c
--- util-linux-2.39.orig/libfdisk/src/context.c	2023-05-11 10:24:24.840187437 +0200
+++ util-linux-2.39/libfdisk/src/context.c	2024-01-13 23:25:56.358057182 +0100
@@ -773,7 +773,7 @@
 					cxt->dev_path);
 			return -errno;
 		}
-		if (!nosync) {
+		if (S_ISBLK(cxt->dev_st.st_mode) && !nosync) {
 			fdisk_info(cxt, _("Syncing disks."));
 			sync();
 		}

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2024-01-13 22:35 [PATCH] libfdisk: fdisk_deassign_device: only sync(2) blockdevs наб
2024-01-15  9:40 ` Karel Zak

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