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ANDROID: GKI: dentry: add Android ABI padding to some structures

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Try to mitigate potential future driver core api changes by adding a
padding to struct dentry and struct dentry_operations.

Based on a change made to the RHEL/CENTOS 8 kernel.

Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Idde3c6e99bd4af3a91ba115b8ec148e3e1cdd4a9
This commit is contained in:
Greg Kroah-Hartman
2020-04-22 15:47:34 +02:00
committed by Carlos Llamas
parent 05a42c34b2
commit d8e7ccc003
1 changed files with 8 additions and 0 deletions
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8
include/linux/dcache.h
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@@ -14,6 +14,7 @@
#include <linux/lockref.h> #include <linux/lockref.h>
#include <linux/stringhash.h> #include <linux/stringhash.h>
#include <linux/wait.h> #include <linux/wait.h>
#include <linux/android_kabi.h>
struct path; struct path;
struct file; struct file;
@@ -111,6 +112,9 @@ struct dentry {
struct hlist_bl_node d_in_lookup_hash; /* only for in-lookup ones */ struct hlist_bl_node d_in_lookup_hash; /* only for in-lookup ones */
struct rcu_head d_rcu; struct rcu_head d_rcu;
} d_u; } d_u;
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
} __randomize_layout; } __randomize_layout;
/* /*
@@ -141,6 +145,10 @@ struct dentry_operations {
int (*d_manage)(const struct path *, bool); int (*d_manage)(const struct path *, bool);
struct dentry *(*d_real)(struct dentry *, const struct inode *); struct dentry *(*d_real)(struct dentry *, const struct inode *);
int (*d_canonical_path)(const struct path *, struct path *); int (*d_canonical_path)(const struct path *, struct path *);
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
} ____cacheline_aligned; } ____cacheline_aligned;
/* /*