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authorDarrick J. Wong <darrick.wong@oracle.com>2017-01-03 18:39:33 -0800
committerDarrick J. Wong <darrick.wong@oracle.com>2017-01-03 18:39:33 -0800
commit20e73b000bcded44a91b79429d8fa743247602ad (patch)
treef17ee4602050d1c97d03527b97addcbb35b48810 /fs/xfs/xfs_fsops.c
parent7a21272b088894070391a94fdd1c67014020fa1d (diff)
xfs: use the actual AG length when reserving blocks
We need to use the actual AG length when making per-AG reservations, since we could otherwise end up reserving more blocks out of the last AG than there are actual blocks. Complained-about-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_fsops.c')
-rw-r--r--fs/xfs/xfs_fsops.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index 93d12fa2670d..242e8091296d 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -631,6 +631,20 @@ xfs_growfs_data_private(
xfs_set_low_space_thresholds(mp);
mp->m_alloc_set_aside = xfs_alloc_set_aside(mp);
+ /*
+ * If we expanded the last AG, free the per-AG reservation
+ * so we can reinitialize it with the new size.
+ */
+ if (new) {
+ struct xfs_perag *pag;
+
+ pag = xfs_perag_get(mp, agno);
+ error = xfs_ag_resv_free(pag);
+ xfs_perag_put(pag);
+ if (error)
+ goto out;
+ }
+
/* Reserve AG metadata blocks. */
error = xfs_fs_reserve_ag_blocks(mp);
if (error && error != -ENOSPC)