From: Jan Kara jack@suse.cz
[ Upstream commit ccb49011bb2ebfd66164dbf68c5bff48917bb5ef ]
Dquots pointed to from i_dquot arrays in inodes are protected by dquot_srcu. Annotate them as such and change .get_dquots callback to return properly annotated pointer to make sparse happy.
Fixes: b9ba6f94b238 ("quota: remove dqptr_sem") Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ext2/ext2.h | 2 +- fs/ext2/super.c | 2 +- fs/ext4/ext4.h | 2 +- fs/ext4/super.c | 2 +- fs/f2fs/f2fs.h | 2 +- fs/f2fs/super.c | 2 +- fs/jfs/jfs_incore.h | 2 +- fs/jfs/super.c | 2 +- fs/ocfs2/inode.h | 2 +- fs/ocfs2/super.c | 2 +- fs/quota/dquot.c | 3 +-- fs/reiserfs/reiserfs.h | 2 +- fs/reiserfs/super.c | 2 +- include/linux/fs.h | 2 +- include/linux/shmem_fs.h | 2 +- mm/shmem.c | 2 +- 16 files changed, 16 insertions(+), 17 deletions(-)
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index 677a9ad45dcb7..f38bdd46e4f77 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -674,7 +674,7 @@ struct ext2_inode_info { struct inode vfs_inode; struct list_head i_orphan; /* unlinked but open inodes */ #ifdef CONFIG_QUOTA - struct dquot *i_dquot[MAXQUOTAS]; + struct dquot __rcu *i_dquot[MAXQUOTAS]; #endif };
diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 01f9addc8b1f6..6d8587505cea3 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -320,7 +320,7 @@ static ssize_t ext2_quota_read(struct super_block *sb, int type, char *data, siz static ssize_t ext2_quota_write(struct super_block *sb, int type, const char *data, size_t len, loff_t off); static int ext2_quota_on(struct super_block *sb, int type, int format_id, const struct path *path); -static struct dquot **ext2_get_dquots(struct inode *inode) +static struct dquot __rcu **ext2_get_dquots(struct inode *inode) { return EXT2_I(inode)->i_dquot; } diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 023571f8dd1b4..4fb938ba3f359 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1158,7 +1158,7 @@ struct ext4_inode_info { tid_t i_datasync_tid;
#ifdef CONFIG_QUOTA - struct dquot *i_dquot[MAXQUOTAS]; + struct dquot __rcu *i_dquot[MAXQUOTAS]; #endif
/* Precomputed uuid+inum+igen checksum for seeding inode checksums */ diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 0f931d0c227da..32bd83adf0bb8 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1600,7 +1600,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type, static int ext4_quota_enable(struct super_block *sb, int type, int format_id, unsigned int flags);
-static struct dquot **ext4_get_dquots(struct inode *inode) +static struct dquot __rcu **ext4_get_dquots(struct inode *inode) { return EXT4_I(inode)->i_dquot; } diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 65294e3b0bef8..31554e2a0a320 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -829,7 +829,7 @@ struct f2fs_inode_info { spinlock_t i_size_lock; /* protect last_disk_size */
#ifdef CONFIG_QUOTA - struct dquot *i_dquot[MAXQUOTAS]; + struct dquot __rcu *i_dquot[MAXQUOTAS];
/* quota space reservation, managed internally by quota code */ qsize_t i_reserved_quota; diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index d45ab0992ae59..18cc4829f7e82 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -2768,7 +2768,7 @@ int f2fs_dquot_initialize(struct inode *inode) return dquot_initialize(inode); }
-static struct dquot **f2fs_get_dquots(struct inode *inode) +static struct dquot __rcu **f2fs_get_dquots(struct inode *inode) { return F2FS_I(inode)->i_dquot; } diff --git a/fs/jfs/jfs_incore.h b/fs/jfs/jfs_incore.h index dd4264aa9bedd..10934f9a11be3 100644 --- a/fs/jfs/jfs_incore.h +++ b/fs/jfs/jfs_incore.h @@ -92,7 +92,7 @@ struct jfs_inode_info { } link; } u; #ifdef CONFIG_QUOTA - struct dquot *i_dquot[MAXQUOTAS]; + struct dquot __rcu *i_dquot[MAXQUOTAS]; #endif u32 dev; /* will die when we get wide dev_t */ struct inode vfs_inode; diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 8d8e556bd6104..ff135a43b5b7b 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -824,7 +824,7 @@ static ssize_t jfs_quota_write(struct super_block *sb, int type, return len - towrite; }
-static struct dquot **jfs_get_dquots(struct inode *inode) +static struct dquot __rcu **jfs_get_dquots(struct inode *inode) { return JFS_IP(inode)->i_dquot; } diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h index 82b28fdacc7e9..accf03d4765ed 100644 --- a/fs/ocfs2/inode.h +++ b/fs/ocfs2/inode.h @@ -65,7 +65,7 @@ struct ocfs2_inode_info tid_t i_sync_tid; tid_t i_datasync_tid;
- struct dquot *i_dquot[MAXQUOTAS]; + struct dquot __rcu *i_dquot[MAXQUOTAS]; };
/* diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 6b906424902b4..1259fe02cd53b 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -122,7 +122,7 @@ static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); static int ocfs2_enable_quotas(struct ocfs2_super *osb); static void ocfs2_disable_quotas(struct ocfs2_super *osb);
-static struct dquot **ocfs2_get_dquots(struct inode *inode) +static struct dquot __rcu **ocfs2_get_dquots(struct inode *inode) { return OCFS2_I(inode)->i_dquot; } diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 3a16867a6fbde..51ff554dc875a 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1002,8 +1002,7 @@ EXPORT_SYMBOL(dqget);
static inline struct dquot __rcu **i_dquot(struct inode *inode) { - /* Force __rcu for now until filesystems are fixed */ - return (struct dquot __rcu **)inode->i_sb->s_op->get_dquots(inode); + return inode->i_sb->s_op->get_dquots(inode); }
static int dqinit_needed(struct inode *inode, int type) diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h index 725667880e626..b65549164590c 100644 --- a/fs/reiserfs/reiserfs.h +++ b/fs/reiserfs/reiserfs.h @@ -97,7 +97,7 @@ struct reiserfs_inode_info { struct rw_semaphore i_xattr_sem; #endif #ifdef CONFIG_QUOTA - struct dquot *i_dquot[MAXQUOTAS]; + struct dquot __rcu *i_dquot[MAXQUOTAS]; #endif
struct inode vfs_inode; diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 67b5510beded2..7b3d5aeb2a6fe 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -802,7 +802,7 @@ static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, loff_t);
-static struct dquot **reiserfs_get_dquots(struct inode *inode) +static struct dquot __rcu **reiserfs_get_dquots(struct inode *inode) { return REISERFS_I(inode)->i_dquot; } diff --git a/include/linux/fs.h b/include/linux/fs.h index 630468c005040..08ecac9d7b8ba 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2158,7 +2158,7 @@ struct super_operations { #ifdef CONFIG_QUOTA ssize_t (*quota_read)(struct super_block *, int, char *, size_t, loff_t); ssize_t (*quota_write)(struct super_block *, int, const char *, size_t, loff_t); - struct dquot **(*get_dquots)(struct inode *); + struct dquot __rcu **(*get_dquots)(struct inode *); #endif long (*nr_cached_objects)(struct super_block *, struct shrink_control *); diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h index 2caa6b86106aa..66828dfc6e74e 100644 --- a/include/linux/shmem_fs.h +++ b/include/linux/shmem_fs.h @@ -37,7 +37,7 @@ struct shmem_inode_info { unsigned int fsflags; /* for FS_IOC_[SG]ETFLAGS */ atomic_t stop_eviction; /* hold when working on inode */ #ifdef CONFIG_TMPFS_QUOTA - struct dquot *i_dquot[MAXQUOTAS]; + struct dquot __rcu *i_dquot[MAXQUOTAS]; #endif struct inode vfs_inode; }; diff --git a/mm/shmem.c b/mm/shmem.c index d7c84ff621860..791a6dc163244 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -311,7 +311,7 @@ static void shmem_disable_quotas(struct super_block *sb) dquot_quota_off(sb, type); }
-static struct dquot **shmem_get_dquots(struct inode *inode) +static struct dquot __rcu **shmem_get_dquots(struct inode *inode) { return SHMEM_I(inode)->i_dquot; }