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authorTejun Heo <tj@kernel.org>2010-02-02 14:39:01 +0900
committerTejun Heo <tj@kernel.org>2010-02-17 11:17:38 +0900
commit003cb608a2533d0927a83bc4e07e46d7a622eda9 (patch)
tree19347ffcec1c09cda9c4fd01addd8797cf8e31c4
parent43cf38eb5cea91245502df3fcee4dbfc1c74dd1c (diff)
downloadop-kernel-dev-003cb608a2533d0927a83bc4e07e46d7a622eda9.zip
op-kernel-dev-003cb608a2533d0927a83bc4e07e46d7a622eda9.tar.gz
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: Tejun 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>
-rw-r--r--fs/ext4/ext4.h2
-rw-r--r--fs/nfs/iostat.h4
-rw-r--r--fs/xfs/xfs_mount.h2
-rw-r--r--include/linux/mount.h2
-rw-r--r--include/linux/nfs_fs_sb.h2
5 files changed, 6 insertions, 6 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 874d169..4cedc91 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -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;
diff --git a/fs/nfs/iostat.h b/fs/nfs/iostat.h
index 46d779a..1d8d5c8 100644
--- a/fs/nfs/iostat.h
+++ b/fs/nfs/iostat.h
@@ -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);
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 1df7e45..24c8887 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -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 */
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 5d52753..b5f43a3 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -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
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 34fc6be..6a2e44f 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -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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