* [PATCH 0/3] Quota cleanups and fixes
@ 2008-03-13 12:03 Jan Kara
2008-03-13 12:05 ` [PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races Jan Kara
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Jan Kara @ 2008-03-13 12:03 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel
Hello,
in the following emails will come three minor quota fixes and cleanups:
[PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races
[PATCH 2/3] Remove superfluous DQUOT_OFF() in fs/namespace.c
[PATCH 3/3] Various style cleanups
Would you please put them to -mm? Thanks.
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races
2008-03-13 12:03 [PATCH 0/3] Quota cleanups and fixes Jan Kara
@ 2008-03-13 12:05 ` Jan Kara
2008-03-13 21:42 ` Andrew Morton
2008-03-13 12:06 ` [PATCH 2/3] Remove superfluous DQUOT_OFF() in fs/namespace.c Jan Kara
2008-03-13 12:07 ` [PATCH 3/3] Various style cleanups Jan Kara
2 siblings, 1 reply; 6+ messages in thread
From: Jan Kara @ 2008-03-13 12:05 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel
We should always put inode we have reference to, even if quota was reenabled
in the mean time.
Signed-off-by: Jan Kara <jack@suse.cz>
---
dquot.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/dquot.c b/fs/dquot.c
index f816d06..24eef58 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -1522,8 +1522,8 @@ int vfs_quota_off(struct super_block *sb, int type)
truncate_inode_pages(&toputinode[cnt]->i_data, 0);
mutex_unlock(&toputinode[cnt]->i_mutex);
mark_inode_dirty(toputinode[cnt]);
- iput(toputinode[cnt]);
}
+ iput(toputinode[cnt]);
mutex_unlock(&dqopt->dqonoff_mutex);
}
if (sb->s_bdev)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 2/3] Remove superfluous DQUOT_OFF() in fs/namespace.c
2008-03-13 12:03 [PATCH 0/3] Quota cleanups and fixes Jan Kara
2008-03-13 12:05 ` [PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races Jan Kara
@ 2008-03-13 12:06 ` Jan Kara
2008-03-13 12:07 ` [PATCH 3/3] Various style cleanups Jan Kara
2 siblings, 0 replies; 6+ messages in thread
From: Jan Kara @ 2008-03-13 12:06 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel
We don't need to turn quotas off before remounting root ro, because
do_remount_sb() already handles this.
Signed-off-by: Jan Kara <jack@suse.cz>
---
namespace.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/fs/namespace.c b/fs/namespace.c
index 7953c96..b6facef 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -14,7 +14,6 @@
#include <linux/smp_lock.h>
#include <linux/init.h>
#include <linux/kernel.h>
-#include <linux/quotaops.h>
#include <linux/acct.h>
#include <linux/capability.h>
#include <linux/module.h>
@@ -638,7 +637,6 @@ static int do_umount(struct vfsmount *mnt, int flags)
down_write(&sb->s_umount);
if (!(sb->s_flags & MS_RDONLY)) {
lock_kernel();
- DQUOT_OFF(sb);
retval = do_remount_sb(sb, MS_RDONLY, NULL, 0);
unlock_kernel();
}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 3/3] Various style cleanups
2008-03-13 12:03 [PATCH 0/3] Quota cleanups and fixes Jan Kara
2008-03-13 12:05 ` [PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races Jan Kara
2008-03-13 12:06 ` [PATCH 2/3] Remove superfluous DQUOT_OFF() in fs/namespace.c Jan Kara
@ 2008-03-13 12:07 ` Jan Kara
2 siblings, 0 replies; 6+ messages in thread
From: Jan Kara @ 2008-03-13 12:07 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel
Cleanups in quota code:
Change __inline__ to inline.
Change some macros to inline functions.
Remove vfs_quota_off_mount() macro.
DQUOT_OFF() should be (0) is CONFIG_QUOTA is disabled.
Move declaration of mark_dquot_dirty and dirty_dquot from quota.h to dquot.c
Signed-off-by: Jan Kara <jack@suse.cz>
---
fs/dquot.c | 10 +++++-
fs/reiserfs/super.c | 2 -
include/linux/quota.h | 5 ---
include/linux/quotaops.h | 71 +++++++++++++++++++++++++++++++++--------------
4 files changed, 60 insertions(+), 28 deletions(-)
diff --git a/fs/dquot.c b/fs/dquot.c
index 24eef58..fc26d10 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -289,7 +289,15 @@ static void wait_on_dquot(struct dquot *dquot)
mutex_unlock(&dquot->dq_lock);
}
-#define mark_dquot_dirty(dquot) ((dquot)->dq_sb->dq_op->mark_dirty(dquot))
+static inline int dquot_dirty(struct dquot *dquot)
+{
+ return test_bit(DQ_MOD_B, &dquot->dq_flags);
+}
+
+static inline int mark_dquot_dirty(struct dquot *dquot)
+{
+ return dquot->dq_sb->dq_op->mark_dirty(dquot);
+}
int dquot_mark_dquot_dirty(struct dquot *dquot)
{
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 393cc22..3e1972d 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -304,7 +304,7 @@ static int finish_unfinished(struct super_block *s)
/* Turn quotas off */
for (i = 0; i < MAXQUOTAS; i++) {
if (sb_dqopt(s)->files[i])
- vfs_quota_off_mount(s, i);
+ vfs_quota_off(s, i);
}
if (ms_active_set)
/* Restore the flag back */
diff --git a/include/linux/quota.h b/include/linux/quota.h
index c1cdbb7..70ec455 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -327,11 +327,6 @@ struct quota_info {
struct quota_format_ops *ops[MAXQUOTAS]; /* Operations for each type */
};
-/* Inline would be better but we need to dereference super_block which is not defined yet */
-int mark_dquot_dirty(struct dquot *dquot);
-
-#define dquot_dirty(dquot) test_bit(DQ_MOD_B, &(dquot)->dq_flags)
-
#define sb_has_quota_enabled(sb, type) ((type)==USRQUOTA ? \
(sb_dqopt(sb)->flags & DQUOT_USR_ENABLED) : (sb_dqopt(sb)->flags & DQUOT_GRP_ENABLED))
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 5110201..b907382 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -41,7 +41,6 @@ extern int vfs_quota_on(struct super_block *sb, int type, int format_id, char *p
extern int vfs_quota_on_mount(struct super_block *sb, char *qf_name,
int format_id, int type);
extern int vfs_quota_off(struct super_block *sb, int type);
-#define vfs_quota_off_mount(sb, type) vfs_quota_off(sb, type)
extern int vfs_quota_sync(struct super_block *sb, int type);
extern int vfs_get_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
extern int vfs_set_dqinfo(struct super_block *sb, int type, struct if_dqinfo *ii);
@@ -59,7 +58,7 @@ extern struct quotactl_ops vfs_quotactl_ops;
/* It is better to call this function outside of any transaction as it might
* need a lot of space in journal for dquot structure allocation. */
-static __inline__ void DQUOT_INIT(struct inode *inode)
+static inline void DQUOT_INIT(struct inode *inode)
{
BUG_ON(!inode->i_sb);
if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode))
@@ -67,7 +66,7 @@ static __inline__ void DQUOT_INIT(struct inode *inode)
}
/* The same as with DQUOT_INIT */
-static __inline__ void DQUOT_DROP(struct inode *inode)
+static inline void DQUOT_DROP(struct inode *inode)
{
/* Here we can get arbitrary inode from clear_inode() so we have
* to be careful. OTOH we don't need locking as quota operations
@@ -90,7 +89,7 @@ static __inline__ void DQUOT_DROP(struct inode *inode)
/* The following allocation/freeing/transfer functions *must* be called inside
* a transaction (deadlocks possible otherwise) */
-static __inline__ int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
+static inline int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
if (sb_any_quota_enabled(inode->i_sb)) {
/* Used space is updated in alloc_space() */
@@ -102,7 +101,7 @@ static __inline__ int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t
return 0;
}
-static __inline__ int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
+static inline int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
{
int ret;
if (!(ret = DQUOT_PREALLOC_SPACE_NODIRTY(inode, nr)))
@@ -110,7 +109,7 @@ static __inline__ int DQUOT_PREALLOC_SPACE(struct inode *inode, qsize_t nr)
return ret;
}
-static __inline__ int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
+static inline int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
if (sb_any_quota_enabled(inode->i_sb)) {
/* Used space is updated in alloc_space() */
@@ -122,7 +121,7 @@ static __inline__ int DQUOT_ALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
return 0;
}
-static __inline__ int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
+static inline int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
{
int ret;
if (!(ret = DQUOT_ALLOC_SPACE_NODIRTY(inode, nr)))
@@ -130,7 +129,7 @@ static __inline__ int DQUOT_ALLOC_SPACE(struct inode *inode, qsize_t nr)
return ret;
}
-static __inline__ int DQUOT_ALLOC_INODE(struct inode *inode)
+static inline int DQUOT_ALLOC_INODE(struct inode *inode)
{
if (sb_any_quota_enabled(inode->i_sb)) {
DQUOT_INIT(inode);
@@ -140,7 +139,7 @@ static __inline__ int DQUOT_ALLOC_INODE(struct inode *inode)
return 0;
}
-static __inline__ void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
+static inline void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
if (sb_any_quota_enabled(inode->i_sb))
inode->i_sb->dq_op->free_space(inode, nr);
@@ -148,19 +147,19 @@ static __inline__ void DQUOT_FREE_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
inode_sub_bytes(inode, nr);
}
-static __inline__ void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
+static inline void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
{
DQUOT_FREE_SPACE_NODIRTY(inode, nr);
mark_inode_dirty(inode);
}
-static __inline__ void DQUOT_FREE_INODE(struct inode *inode)
+static inline void DQUOT_FREE_INODE(struct inode *inode)
{
if (sb_any_quota_enabled(inode->i_sb))
inode->i_sb->dq_op->free_inode(inode, 1);
}
-static __inline__ int DQUOT_TRANSFER(struct inode *inode, struct iattr *iattr)
+static inline int DQUOT_TRANSFER(struct inode *inode, struct iattr *iattr)
{
if (sb_any_quota_enabled(inode->i_sb) && !IS_NOQUOTA(inode)) {
DQUOT_INIT(inode);
@@ -171,9 +170,12 @@ static __inline__ int DQUOT_TRANSFER(struct inode *inode, struct iattr *iattr)
}
/* The following two functions cannot be called inside a transaction */
-#define DQUOT_SYNC(sb) sync_dquots(sb, -1)
+static inline void DQUOT_SYNC(struct super_block *sb)
+{
+ sync_dquots(sb, -1);
+}
-static __inline__ int DQUOT_OFF(struct super_block *sb)
+static inline int DQUOT_OFF(struct super_block *sb)
{
int ret = -ENOSYS;
@@ -194,7 +196,7 @@ static __inline__ int DQUOT_OFF(struct super_block *sb)
#define DQUOT_ALLOC_INODE(inode) (0)
#define DQUOT_FREE_INODE(inode) do { } while(0)
#define DQUOT_SYNC(sb) do { } while(0)
-#define DQUOT_OFF(sb) do { } while(0)
+#define DQUOT_OFF(sb) (0)
#define DQUOT_TRANSFER(inode, iattr) (0)
static inline int DQUOT_PREALLOC_SPACE_NODIRTY(struct inode *inode, qsize_t nr)
{
@@ -235,11 +237,38 @@ static inline void DQUOT_FREE_SPACE(struct inode *inode, qsize_t nr)
#endif /* CONFIG_QUOTA */
-#define DQUOT_PREALLOC_BLOCK_NODIRTY(inode, nr) DQUOT_PREALLOC_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
-#define DQUOT_PREALLOC_BLOCK(inode, nr) DQUOT_PREALLOC_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
-#define DQUOT_ALLOC_BLOCK_NODIRTY(inode, nr) DQUOT_ALLOC_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
-#define DQUOT_ALLOC_BLOCK(inode, nr) DQUOT_ALLOC_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
-#define DQUOT_FREE_BLOCK_NODIRTY(inode, nr) DQUOT_FREE_SPACE_NODIRTY(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
-#define DQUOT_FREE_BLOCK(inode, nr) DQUOT_FREE_SPACE(inode, ((qsize_t)(nr)) << (inode)->i_sb->s_blocksize_bits)
+static inline int DQUOT_PREALLOC_BLOCK_NODIRTY(struct inode *inode, qsize_t nr)
+{
+ return DQUOT_PREALLOC_SPACE_NODIRTY(inode,
+ nr << inode->i_sb->s_blocksize_bits);
+}
+
+static inline int DQUOT_PREALLOC_BLOCK(struct inode *inode, qsize_t nr)
+{
+ return DQUOT_PREALLOC_SPACE(inode,
+ nr << inode->i_sb->s_blocksize_bits);
+}
+
+static inline int DQUOT_ALLOC_BLOCK_NODIRTY(struct inode *inode, qsize_t nr)
+{
+ return DQUOT_ALLOC_SPACE_NODIRTY(inode,
+ nr << inode->i_sb->s_blocksize_bits);
+}
+
+static inline int DQUOT_ALLOC_BLOCK(struct inode *inode, qsize_t nr)
+{
+ return DQUOT_ALLOC_SPACE(inode,
+ nr << inode->i_sb->s_blocksize_bits);
+}
+
+static inline void DQUOT_FREE_BLOCK_NODIRTY(struct inode *inode, qsize_t nr)
+{
+ DQUOT_FREE_SPACE_NODIRTY(inode, nr << inode->i_sb->s_blocksize_bits);
+}
+
+static inline void DQUOT_FREE_BLOCK(struct inode *inode, qsize_t nr)
+{
+ DQUOT_FREE_SPACE(inode, nr << inode->i_sb->s_blocksize_bits);
+}
#endif /* _LINUX_QUOTAOPS_ */
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races
2008-03-13 12:05 ` [PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races Jan Kara
@ 2008-03-13 21:42 ` Andrew Morton
2008-03-17 13:13 ` Jan Kara
0 siblings, 1 reply; 6+ messages in thread
From: Andrew Morton @ 2008-03-13 21:42 UTC (permalink / raw)
To: Jan Kara; +Cc: linux-kernel
On Thu, 13 Mar 2008 13:05:52 +0100
Jan Kara <jack@suse.cz> wrote:
> We should always put inode we have reference to, even if quota was reenabled
> in the mean time.
>
> Signed-off-by: Jan Kara <jack@suse.cz>
>
> ---
> dquot.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/dquot.c b/fs/dquot.c
> index f816d06..24eef58 100644
> --- a/fs/dquot.c
> +++ b/fs/dquot.c
> @@ -1522,8 +1522,8 @@ int vfs_quota_off(struct super_block *sb, int type)
> truncate_inode_pages(&toputinode[cnt]->i_data, 0);
> mutex_unlock(&toputinode[cnt]->i_mutex);
> mark_inode_dirty(toputinode[cnt]);
> - iput(toputinode[cnt]);
> }
> + iput(toputinode[cnt]);
> mutex_unlock(&dqopt->dqonoff_mutex);
> }
> if (sb->s_bdev)
This one looks like 2.6.25 material?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races
2008-03-13 21:42 ` Andrew Morton
@ 2008-03-17 13:13 ` Jan Kara
0 siblings, 0 replies; 6+ messages in thread
From: Jan Kara @ 2008-03-17 13:13 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel
On Thu 13-03-08 14:42:11, Andrew Morton wrote:
> On Thu, 13 Mar 2008 13:05:52 +0100
> Jan Kara <jack@suse.cz> wrote:
>
> > We should always put inode we have reference to, even if quota was reenabled
> > in the mean time.
> >
> > Signed-off-by: Jan Kara <jack@suse.cz>
> >
> > ---
> > dquot.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/fs/dquot.c b/fs/dquot.c
> > index f816d06..24eef58 100644
> > --- a/fs/dquot.c
> > +++ b/fs/dquot.c
> > @@ -1522,8 +1522,8 @@ int vfs_quota_off(struct super_block *sb, int type)
> > truncate_inode_pages(&toputinode[cnt]->i_data, 0);
> > mutex_unlock(&toputinode[cnt]->i_mutex);
> > mark_inode_dirty(toputinode[cnt]);
> > - iput(toputinode[cnt]);
> > }
> > + iput(toputinode[cnt]);
> > mutex_unlock(&dqopt->dqonoff_mutex);
> > }
> > if (sb->s_bdev)
> This one looks like 2.6.25 material?
Yes, this can be nasty when triggered (Busy inodes after umount) and the
patch is safe.
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2008-03-17 13:13 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-03-13 12:03 [PATCH 0/3] Quota cleanups and fixes Jan Kara
2008-03-13 12:05 ` [PATCH 1/3] Add possibly missing iput() when quotaon and quotaoff races Jan Kara
2008-03-13 21:42 ` Andrew Morton
2008-03-17 13:13 ` Jan Kara
2008-03-13 12:06 ` [PATCH 2/3] Remove superfluous DQUOT_OFF() in fs/namespace.c Jan Kara
2008-03-13 12:07 ` [PATCH 3/3] Various style cleanups Jan Kara
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