AcoSail/kernel_optimize_test
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sysfs: Store the sysfs inode in an unsigned int.

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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 <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Eric W. Biederman 2011-12-18 20:08:16 -08:00 committed by Greg Kroah-Hartman
parent 15a3382451
commit cafa6b5dd7
2 changed files with 3 additions and 3 deletions
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4
fs/sysfs/dir.c
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@ -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);

2
fs/sysfs/sysfs.h
View File

@ -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;
};