Commit 003cb608 authored by Tejun Heo's avatar Tejun Heo
Browse files

percpu: add __percpu sparse annotations to fs 



Add __percpu sparse annotations to fs.

These annotations are to make sparse consider percpu variables to be
in a different address space and warn if accessed without going
through percpu accessors.  This patch doesn't affect normal builds.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Alex Elder <aelder@sgi.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
parent 43cf38eb

fs/ext4/ext4.h

+1 −1
Original line number Diff line number Diff line
@@ -1014,7 +1014,7 @@ struct ext4_sb_info { 
	atomic_t s_lock_busy;



	/* locality groups */

	struct ext4_locality_group *s_locality_groups;

	struct ext4_locality_group __percpu *s_locality_groups;



	/* for write statistics */

	unsigned long s_sectors_written_start;

fs/nfs/iostat.h

+2 −2
Original line number Diff line number Diff line
@@ -57,12 +57,12 @@ static inline void nfs_add_fscache_stats(struct inode *inode, 
}

#endif



static inline struct nfs_iostats *nfs_alloc_iostats(void)

static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void)

{

	return alloc_percpu(struct nfs_iostats);

}



static inline void nfs_free_iostats(struct nfs_iostats *stats)

static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats)

{

	if (stats != NULL)

		free_percpu(stats);

fs/xfs/xfs_mount.h

+1 −1
Original line number Diff line number Diff line
@@ -243,7 +243,7 @@ typedef struct xfs_mount { 
	struct xfs_qmops	*m_qm_ops;	/* vector of XQM ops */

	atomic_t		m_active_trans;	/* number trans frozen */

#ifdef HAVE_PERCPU_SB

	xfs_icsb_cnts_t		*m_sb_cnts;	/* per-cpu superblock counters */

	xfs_icsb_cnts_t __percpu *m_sb_cnts;	/* per-cpu superblock counters */

	unsigned long		m_icsb_counters; /* disabled per-cpu counters */

	struct notifier_block	m_icsb_notifier; /* hotplug cpu notifier */

	struct mutex		m_icsb_mutex;	/* balancer sync lock */

include/linux/mount.h

+1 −1
Original line number Diff line number Diff line
@@ -66,7 +66,7 @@ struct vfsmount { 
	int mnt_pinned;

	int mnt_ghosts;

#ifdef CONFIG_SMP

	int *mnt_writers;

	int __percpu *mnt_writers;

#else

	int mnt_writers;

#endif

include/linux/nfs_fs_sb.h

+1 −1
Original line number Diff line number Diff line
@@ -105,7 +105,7 @@ struct nfs_server { 
	struct rpc_clnt *	client;		/* RPC client handle */

	struct rpc_clnt *	client_acl;	/* ACL RPC client handle */

	struct nlm_host		*nlm_host;	/* NLM client handle */

	struct nfs_iostats *	io_stats;	/* I/O statistics */

	struct nfs_iostats __percpu *io_stats;	/* I/O statistics */

	struct backing_dev_info	backing_dev_info;

	atomic_long_t		writeback;	/* number of writeback pages */

	int			flags;		/* various flags */

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