sysfs: Store the sysfs inode in an unsigned int.

Store the sysfs inode number in an unsided int because ida inode allocator can return at most a 31 bit number, reducing the size of struct sysfs_dirent by 8 bytes on 64bit platforms. Signed-off-by: Eric W. Biederman <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
chewitt · Jan 24, 2012 · cafa6b5 · cafa6b5
1 parent 15a3382
commit cafa6b5
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Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
@@ -224,7 +224,7 @@ static void sysfs_deactivate(struct sysfs_dirent *sd)
 	rwsem_release(&sd->dep_map, 1, _RET_IP_);
 }
 
-static int sysfs_alloc_ino(ino_t *pino)
+static int sysfs_alloc_ino(unsigned int *pino)
 {
 	int ino, rc;
 
@@ -243,7 +243,7 @@ static int sysfs_alloc_ino(ino_t *pino)
 	return rc;
 }
 
-static void sysfs_free_ino(ino_t ino)
+static void sysfs_free_ino(unsigned int ino)
 {
 	spin_lock(&sysfs_ino_lock);
 	ida_remove(&sysfs_ino_ida, ino);

diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
@@ -79,7 +79,7 @@ struct sysfs_dirent {
 
 	unsigned short		s_flags;
 	umode_t 		s_mode;
-	ino_t			s_ino;
+	unsigned int		s_ino;
 	struct sysfs_inode_attrs *s_iattr;
 };