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filesystems: Add a paragraph about post-EOF reclaim after crash.
author
Andre Noll
<maan@tuebingen.mpg.de>
Sat, 7 Nov 2020 21:45:27 +0000
(22:45 +0100)
committer
Andre Noll
<maan@tuebingen.mpg.de>
Sun, 9 May 2021 14:58:37 +0000
(16:58 +0200)
Filesystems.m4
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diff --git
a/Filesystems.m4
b/Filesystems.m4
index 9035de5218f1ab8da1e4c6e399438f2b523002a8..e2ac56198451a3f2bee58d0bbc764399aa86958d 100644
(file)
--- a/
Filesystems.m4
+++ b/
Filesystems.m4
@@
-955,6
+955,11
@@
file fragmentation, but they can cause confusion because they are
accounted identically to other blocks, making files appear to use
more data blocks than expected. </p>
accounted identically to other blocks, making files appear to use
more data blocks than expected. </p>
+<p> If the system crashes while preallocated post-EOF blocks exist,
+the space will be recovered the next time the affected file gets closed
+(after it has been opened of course) by the normal reclaim mechanism
+which happens when a file is being closed. </p>
+
SUBSECTION(«Reverse Mapping»)
<p> This feature was implemented in 2018. It adds yet another B-tree to
SUBSECTION(«Reverse Mapping»)
<p> This feature was implemented in 2018. It adds yet another B-tree to