[PATCH 19/76] libxfs: fix min freelist length calculation
From: Darrick J. Wong <hidden>
Date: 2015-12-19 08:58:32
Subsystem:
filesystems (vfs and infrastructure), the rest, xfs filesystem · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds, Carlos Maiolino
If rmapbt is disabled, it is incorrect to require 1 extra AGFL block for the rmapbt (due to the + 1); the entire clause needs to be gated on the feature flag. Signed-off-by: Darrick J. Wong <redacted> --- fs/xfs/libxfs/xfs_alloc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index 5a829d7..aa3cc24 100644
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c@@ -1980,8 +1980,10 @@ xfs_alloc_min_freelist( min_free += min_t(unsigned int, pag->pagf_levels[XFS_BTNUM_CNTi] + 1, mp->m_ag_maxlevels); /* space needed reverse mapping used space btree */ - min_free += min_t(unsigned int, pag->pagf_levels[XFS_BTNUM_RMAPi] + 1, - mp->m_ag_maxlevels); + if (xfs_sb_version_hasrmapbt(&mp->m_sb)) + min_free += min_t(unsigned int, + pag->pagf_levels[XFS_BTNUM_RMAPi] + 1, + mp->m_ag_maxlevels); return min_free; }
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