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-rw-r--r--Documentation/admin-guide/ext4.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/ext4.rst b/Documentation/admin-guide/ext4.rst
index 7fc6a72920c9..59bcc4a92602 100644
--- a/Documentation/admin-guide/ext4.rst
+++ b/Documentation/admin-guide/ext4.rst
@@ -482,6 +482,9 @@ Files in /sys/fs/ext4/<devname>:
multiple of this tuning parameter if the stripe size is not set in the
ext4 superblock
+ mb_max_inode_prealloc
+ The maximum length of per-inode ext4_prealloc_space list.
+
mb_max_to_scan
The maximum number of extents the multiblock allocator will search to
find the best extent.