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Commit f2a6cc1f authored by Jan Kara's avatar Jan Kara
Browse files

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



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

Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent fab3c858

fs/udf/udf_sb.h

+16 −4
Original line number Diff line number Diff line
@@ -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 */