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man2/fallocate.2: Document behavior with shared blocks
authorDarrick J. Wong <darrick.wong@oracle.com>
Tue, 18 Oct 2016 01:54:27 +0000 (18:54 -0700)
committerMichael Kerrisk <mtk.manpages@gmail.com>
Tue, 18 Oct 2016 06:05:34 +0000 (08:05 +0200)
commit63a599c657d82a6374272aa4c8f31b5cc1bd9a58
tree07c7a6a35497097d192520d758590c752579db0ctree | snapshot
parent3b3d46e7cf1a9949da668db7b686bd968a80f137commit | diff
man2/fallocate.2: Document behavior with shared blocks

Note that FALLOC_FL_UNSHARE may use CoW to unshare blocks to
guarantee that a disk write won't fail with ENOSPC.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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