tree 142563d188772e8db134730c4c32a5d548b7ed50
parent 3a92ff006fa813b0f9e1a895866ab89f4f0abf6a
author Darrick J. Wong <djwong@kernel.org> 1734729706 -0800
committer Darrick J. Wong <djwong@kernel.org> 1736890448 -0800

libxfs: unmap xmbuf pages to avoid disaster

It turns out that there's a maximum mappings count, so we need to be
smartish about not overflowing that with too many xmbuf buffers.  This
needs to be a global value because high-agcount filesystems will create
a large number of xmbuf caches but this is a process-global limit.

Fixes: 124b388dac17f5 ("libxfs: support in-memory buffer cache targets")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>