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-rw-r--r--fs/xfs/xfs_mount.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 19e9dfa..40579fd 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -975,6 +975,24 @@ xfs_set_rw_sizes(xfs_mount_t *mp)
}
/*
+ * precalculate the low space thresholds for dynamic speculative preallocation.
+ */
+void
+xfs_set_low_space_thresholds(
+ struct xfs_mount *mp)
+{
+ int i;
+
+ for (i = 0; i < XFS_LOWSP_MAX; i++) {
+ __uint64_t space = mp->m_sb.sb_dblocks;
+
+ do_div(space, 100);
+ mp->m_low_space[i] = space * (i + 1);
+ }
+}
+
+
+/*
* Set whether we're using inode alignment.
*/
STATIC void
@@ -1196,6 +1214,9 @@ xfs_mountfs(
*/
xfs_set_rw_sizes(mp);
+ /* set the low space thresholds for dynamic preallocation */
+ xfs_set_low_space_thresholds(mp);
+
/*
* Set the inode cluster size.
* This may still be overridden by the file system
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