renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-11-19 08:05:27 +08:00
Code

udf: Convert UDF_SB(sb)->s_flags to use bitops

Browse Source 
Use atomic bitops to manipulate with sb flags to make manipulation safe
without any locking.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2010-10-20 17:25:59 +02:00
parent fab3c8581f
commit f2a6cc1f14
1 changed files with 16 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
fs/udf/udf_sb.h
View File

@ -2,6 +2,7 @@
#define __LINUX_UDF_SB_H
#include <linux/mutex.h>
#include <linux/bitops.h>
/* Since UDF 2.01 is ISO 13346 based... */
#define UDF_SUPER_MAGIC 0x15013346
@ -139,7 +140,7 @@ struct udf_sb_info {
__u16 s_udfrev;
/* Miscellaneous flags */
__u32 s_flags;
unsigned long s_flags;
/* Encoding info */
struct nls_table *s_nls_map;
@ -161,8 +162,19 @@ struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
int udf_compute_nr_groups(struct super_block *sb, u32 partition);
#define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
#define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
#define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
{
return test_bit(flag, &UDF_SB(sb)->s_flags);
}
static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
{
set_bit(flag, &UDF_SB(sb)->s_flags);
}
static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
{
clear_bit(flag, &UDF_SB(sb)->s_flags);
}
#endif /* __LINUX_UDF_SB_H */