Messages in this thread Patch in this message |  | | From | (Eric W. Biederman) | | Date | Thu, 08 Mar 2012 13:34:22 -0800 | | Subject | [PATCH 1/3] sysfs: Compact sysfs_dirent s_flags into a byte. |
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In an effort to keep sysfs_dirent small used the smallest basic type I can for sysfs s_flags.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> --- fs/sysfs/sysfs.h | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h index 6289a00..c76c932 100644 --- a/fs/sysfs/sysfs.h +++ b/fs/sysfs/sysfs.h @@ -76,7 +76,7 @@ struct sysfs_dirent { struct sysfs_elem_bin_attr s_bin_attr; }; - unsigned short s_flags; + unsigned char s_flags; umode_t s_mode; unsigned int s_ino; struct sysfs_inode_attrs *s_iattr; @@ -84,7 +84,7 @@ struct sysfs_dirent { #define SD_DEACTIVATED_BIAS INT_MIN -#define SYSFS_TYPE_MASK 0x00ff +#define SYSFS_TYPE_MASK 0x000f #define SYSFS_DIR 0x0001 #define SYSFS_KOBJ_ATTR 0x0002 #define SYSFS_KOBJ_BIN_ATTR 0x0004 @@ -93,11 +93,11 @@ struct sysfs_dirent { #define SYSFS_ACTIVE_REF (SYSFS_KOBJ_ATTR | SYSFS_KOBJ_BIN_ATTR) /* identify any namespace tag on sysfs_dirents */ -#define SYSFS_NS_TYPE_MASK 0xf00 -#define SYSFS_NS_TYPE_SHIFT 8 +#define SYSFS_NS_TYPE_MASK 0x70 +#define SYSFS_NS_TYPE_SHIFT 4 #define SYSFS_FLAG_MASK ~(SYSFS_NS_TYPE_MASK|SYSFS_TYPE_MASK) -#define SYSFS_FLAG_REMOVED 0x02000 +#define SYSFS_FLAG_REMOVED 0x080 static inline unsigned int sysfs_type(struct sysfs_dirent *sd) { -- 1.7.2.5
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