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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-09 09:02:35 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-09 09:02:35 +0200
commit1236d6bb6e19fc72ffc6bbcdeb1bfefe450e54ee (patch)
tree47da3feee8e263e8c9352c85cf518e624be3c211 /fs/xfs/libxfs/xfs_ag_resv.c
parent750b1a6894ecc9b178c6e3d0a1170122971b2036 (diff)
parent8a5776a5f49812d29fe4b2d0a2d71675c3facf3f (diff)
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Merge 4.14-rc4 into staging-next
We want the staging/iio fixes in here as well to handle merge issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/xfs/libxfs/xfs_ag_resv.c')
-rw-r--r--fs/xfs/libxfs/xfs_ag_resv.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/xfs/libxfs/xfs_ag_resv.c b/fs/xfs/libxfs/xfs_ag_resv.c
index b008ff3250eb..df3e600835e8 100644
--- a/fs/xfs/libxfs/xfs_ag_resv.c
+++ b/fs/xfs/libxfs/xfs_ag_resv.c
@@ -156,7 +156,8 @@ __xfs_ag_resv_free(
trace_xfs_ag_resv_free(pag, type, 0);
resv = xfs_perag_resv(pag, type);
- pag->pag_mount->m_ag_max_usable += resv->ar_asked;
+ if (pag->pag_agno == 0)
+ pag->pag_mount->m_ag_max_usable += resv->ar_asked;
/*
* AGFL blocks are always considered "free", so whatever
* was reserved at mount time must be given back at umount.
@@ -216,7 +217,14 @@ __xfs_ag_resv_init(
return error;
}
- mp->m_ag_max_usable -= ask;
+ /*
+ * Reduce the maximum per-AG allocation length by however much we're
+ * trying to reserve for an AG. Since this is a filesystem-wide
+ * counter, we only make the adjustment for AG 0. This assumes that
+ * there aren't any AGs hungrier for per-AG reservation than AG 0.
+ */
+ if (pag->pag_agno == 0)
+ mp->m_ag_max_usable -= ask;
resv = xfs_perag_resv(pag, type);
resv->ar_asked = ask;