From 123e9caf1e85008ab7eb5f6cd58c44f9a5d73b2b Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 19 May 2010 07:16:44 -0400 Subject: [PATCH] quota: explicitly set ->dq_op and ->s_qcop Only set the quota operation vectors if the filesystem actually supports quota instead of doing it for all filesystems in alloc_super(). [Jan Kara: Export dquot_operations and vfs_quotactl_ops] Signed-off-by: Christoph Hellwig Signed-off-by: Jan Kara --- fs/ext2/super.c | 6 ++++++ fs/jfs/super.c | 4 ++++ fs/quota/dquot.c | 3 ++- fs/super.c | 3 --- fs/udf/super.c | 6 +++++- fs/ufs/super.c | 6 +++++- include/linux/quotaops.h | 9 --------- 7 files changed, 22 insertions(+), 15 deletions(-) diff --git a/fs/ext2/super.c b/fs/ext2/super.c index b9b77c3..df752b7 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1065,6 +1065,12 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) sb->s_op = &ext2_sops; sb->s_export_op = &ext2_export_ops; sb->s_xattr = ext2_xattr_handlers; + +#ifdef CONFIG_QUOTA + sb->dq_op = &dquot_operations; + sb->s_qcop = &vfs_quotactl_ops; +#endif + root = ext2_iget(sb, EXT2_ROOT_INO); if (IS_ERR(root)) { ret = PTR_ERR(root); diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 7d940a3..2e7ec5e 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -481,6 +481,10 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) */ sb->s_op = &jfs_super_operations; sb->s_export_op = &jfs_export_operations; +#ifdef CONFIG_QUOTA + sb->dq_op = &dquot_operations; + sb->s_qcop = &vfs_quotactl_ops; +#endif /* * Initialize direct-mapping inode/address-space diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index b844226..9ba526e 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1847,6 +1847,7 @@ const struct dquot_operations dquot_operations = { .alloc_dquot = dquot_alloc, .destroy_dquot = dquot_destroy, }; +EXPORT_SYMBOL(dquot_operations); /* * Generic helper for ->open on filesystems supporting disk quotas. @@ -2491,7 +2492,7 @@ const struct quotactl_ops vfs_quotactl_ops = { .get_dqblk = vfs_get_dqblk, .set_dqblk = vfs_set_dqblk }; - +EXPORT_SYMBOL(vfs_quotactl_ops); static int do_proc_dqstats(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) diff --git a/fs/super.c b/fs/super.c index 05f62e5..af9fd02 100644 --- a/fs/super.c +++ b/fs/super.c @@ -24,7 +24,6 @@ #include #include #include -#include #include #include #include /* for the emergency remount stuff */ @@ -94,8 +93,6 @@ static struct super_block *alloc_super(struct file_system_type *type) init_rwsem(&s->s_dquot.dqptr_sem); init_waitqueue_head(&s->s_wait_unfrozen); s->s_maxbytes = MAX_NON_LFS; - s->dq_op = sb_dquot_ops; - s->s_qcop = sb_quotactl_ops; s->s_op = &default_op; s->s_time_gran = 1000000000; } diff --git a/fs/udf/super.c b/fs/udf/super.c index 76a6156..ef9221b 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1948,7 +1948,11 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) /* Fill in the rest of the superblock */ sb->s_op = &udf_sb_ops; sb->s_export_op = &udf_export_ops; - sb->dq_op = NULL; +#ifdef CONFIG_QUOTA + sb->s_qcop = &vfs_quotactl_ops; + sb->dq_op = NULL; /* &dquot_operations */ +#endif + sb->s_dirt = 0; sb->s_magic = UDF_SUPER_MAGIC; sb->s_time_gran = 1000; diff --git a/fs/ufs/super.c b/fs/ufs/super.c index d3977c7..60c989b 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -1045,7 +1045,11 @@ magic_found: */ sb->s_op = &ufs_super_ops; sb->s_export_op = &ufs_export_ops; - sb->dq_op = NULL; /***/ +#ifdef CONFIG_QUOTA + sb->s_qcop = &vfs_quotactl_ops; + sb->dq_op = NULL; /* &dquot_operations */ +#endif + sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h index a6592dd..84b8dbf 100644 --- a/include/linux/quotaops.h +++ b/include/linux/quotaops.h @@ -153,9 +153,6 @@ static inline unsigned sb_any_quota_active(struct super_block *sb) extern const struct dquot_operations dquot_operations; extern const struct quotactl_ops vfs_quotactl_ops; -#define sb_dquot_ops (&dquot_operations) -#define sb_quotactl_ops (&vfs_quotactl_ops) - #else static inline int sb_has_quota_usage_enabled(struct super_block *sb, int type) @@ -199,12 +196,6 @@ static inline int sb_any_quota_active(struct super_block *sb) return 0; } -/* - * NO-OP when quota not configured. - */ -#define sb_dquot_ops (NULL) -#define sb_quotactl_ops (NULL) - static inline void dquot_initialize(struct inode *inode) { } -- 1.8.2.3