Aneesh Kumar K.V wrote:
the variable free is confusingly named here. It is not the free inode
count.
rather it indicate the last used relative inode number in the group. How
about
the below ?
-aneesh
I agree, it's better.
Valérie
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 4250c02..cfe2e09 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -633,17 +633,21 @@ got:
/* If we didn't allocate from within the initialized part of the inode
* table then we need to initialize up to this inode. */
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
- if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
+ if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT))
gdp->bg_flags &= cpu_to_le16(~EXT4_BG_INODE_UNINIT);
- free = EXT4_INODES_PER_GROUP(sb);
- } else {
- free = EXT4_INODES_PER_GROUP(sb) -
- le16_to_cpu(gdp->bg_itable_unused);
- }
- if (ino > free)
+ /*
+ * Check the relative inode number against the last used
+ * relative inode number in this group. if it is greater
+ * we need to update the bg_itable_unused count
+ *
+ */
+ if (ino > (EXT4_INODES_PER_GROUP(sb) -
+ le16_to_cpu(gdp->bg_itable_unused))) {
+
gdp->bg_itable_unused =
cpu_to_le16(EXT4_INODES_PER_GROUP(sb) - ino);
+ }
}
gdp->bg_free_inodes_count =
-
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