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authorChristoph Hellwig <hch@infradead.org>2010-05-19 07:16:44 -0400
committerJan Kara <jack@suse.cz>2010-05-24 14:10:17 +0200
commit123e9caf1e85008ab7eb5f6cd58c44f9a5d73b2b (patch)
treea7a49a9aabb2136e8d19a3d86096bb525a16e0b9
parent307ae18a56e5b706056a2050d52e8cc01b5171c0 (diff)
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 <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
-rw-r--r--fs/ext2/super.c6
-rw-r--r--fs/jfs/super.c4
-rw-r--r--fs/quota/dquot.c3
-rw-r--r--fs/super.c3
-rw-r--r--fs/udf/super.c6
-rw-r--r--fs/ufs/super.c6
-rw-r--r--include/linux/quotaops.h9
7 files changed, 22 insertions, 15 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index b9b77c3e7ae..df752b71b86 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 7d940a3a3d9..2e7ec5e8cda 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 b84422657f6..9ba526e3f71 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 05f62e5d464..af9fd02185a 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -24,7 +24,6 @@
#include <linux/slab.h>
#include <linux/acct.h>
#include <linux/blkdev.h>
-#include <linux/quotaops.h>
#include <linux/mount.h>
#include <linux/security.h>
#include <linux/writeback.h> /* 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 76a61566f29..ef9221b7456 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 d3977c7128e..60c989b7012 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 a6592ddc349..84b8dbf59c0 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)
{
}