Change the inode hash/lookup VFS API functions to accept u64 parameters
instead of unsigned long for inode numbers and hash values. This is
preparation for widening i_ino itself to u64, which will allow
filesystems to store full 64-bit inode numbers on 32-bit architectures.
Since unsigned long implicitly widens to u64 on all architectures, this
change is backward-compatible with all existing callers.
In dump_mapping(), change the local ino variable to kino_t and use the
PRIino format macro, since this variable holds an i_ino value. In
init_special_inode(), also switch to PRIino.
Signed-off-by: Jeff Layton
---
fs/inode.c | 49 -
include/linux/fs.h | 26 +-
2 files changed, 37 insertions(+), 38 deletions(-)
diff --git a/fs/inode.c b/fs/inode.c
index
cc12b68e021b2c97cc88a46ddc736334ecb8edfa..24ab9fa10baf7c885244f23bfccd731efe4a14cc
100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -672,7 +672,7 @@ static inline void inode_sb_list_del(struct inode *inode)
}
}
-static unsigned long hash(struct super_block *sb, unsigned long hashval)
+static unsigned long hash(struct super_block *sb, u64 hashval)
{
unsigned long tmp;
@@ -685,12 +685,12 @@ static unsigned long hash(struct super_block *sb,
unsigned long hashval)
/**
* __insert_inode_hash - hash an inode
* @inode: unhashed inode
- * @hashval: unsigned long value used to locate this object in the
+ * @hashval: u64 value used to locate this object in the
* inode_hashtable.
*
* Add an inode to the inode hash for this superblock.
*/
-void __insert_inode_hash(struct inode *inode, unsigned long hashval)
+void __insert_inode_hash(struct inode *inode, u64 hashval)
{
struct hlist_head *b = inode_hashtable + hash(inode->i_sb, hashval);
@@ -726,7 +726,7 @@ void dump_mapping(const struct address_space *mapping)
struct dentry *dentry_ptr;
struct dentry dentry;
char fname[64] = {};
- unsigned long ino;
+ kino_t ino;
/*
* If mapping is an invalid pointer, we don't want to crash
@@ -750,14 +750,14 @@ void dump_mapping(const struct address_space *mapping)
}
if (!dentry_first) {
- pr_warn("aops:%ps ino:%lx\n", a_ops, ino);
+ pr_warn("aops:%ps ino:%" PRIino "x\n", a_ops, ino);
return;
}
dentry_ptr = container_of(dentry_first, struct dentry, d_u.d_alias);
if (get_kernel_nofault(dentry, dentry_ptr) ||
!dentry.d_parent || !dentry.d_name.name) {
- pr_warn("aops:%ps ino:%lx invalid dentry:%px\n",
+ pr_warn("aops:%ps ino:%" PRIino "x invalid dentry:%px\n",
a_ops, ino, dentry_ptr);
return;
}
@@ -768,7 +768,7 @@ void dump_mapping(const struct address_space *mapping)
* Even if strncpy_from_kernel_nofault() succeeded,
* the fname could be unreliable
*/
- pr_warn("aops:%ps ino:%lx dentry name(?):\"%s\"\n",
+ pr_warn("aops:%ps ino:%" PRIino "x dentry name(?):\"%s\"\n",
a_ops, ino, fname);
}
@@ -1087,7 +1087,7 @@ static struct inode *find_inode(struct super_block *sb,
* iget_locked for details.
*/
static struct inode *find_inode_fast(struct super_block *sb,
- struct hlist_head *head, unsigned long ino,
+ struct hlist_head *head, u64 ino,
bool hash_locked, bool *isnew)
{
struct inode *inode = NULL;
@@ -1301,7 +1301,7 @@ EXPORT_SYMBOL(unlock_two_nondirectories);
* Note that both @test and @set are called with the inode_hash_lock held, so
* they can't sleep.
*/
-struct inode *inode_insert5(struct inode *inode, unsigned long hashval,
+struct inode *inode_insert5(struct inode *inode, u64 hashval,
int (*test)(struct inode *, void *),
int (*set)(struct inode *, void *), void *data)
{
@@ -1378,7 +1378,7 @@ EXPORT_SYMBOL(inode_insert5);
* Note that both @test and @set are called with the inode_hash_lock held, so
* they can't sleep.
*/
-struct inode *iget5_locked(struct super_block *sb, unsigned long hashval,
+struct inode *iget5_locked(struct super_block *sb, u64 hashval,
int (*test)(struct inode *, void *),
int (*set)(struct inode *, void *), void *data)
{
@@ -1408,7 +1408,7 @@ EXPORT_SYMBOL(iget5_locked);
* This is equivalent to iget5_locked, except the @test callback must
* tolerate the inode not being stable, including being mid-teardown.
*/
-struct inode *iget5_locked_rcu(struct super_block *sb, unsigned long hashval,
+struct inode *iget5_locked_rcu(struct super_block *sb, u64 hashval,
int (*test)(struct inode *, void *),
int (*set)(struct inode *, void *), void *data)
{
@@ -1455,7 +1455,7 @@ EXPORT_SYMBOL_GP
