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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-18 03:12:34 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-18 03:12:34 +0300
commit038911597e17017cee55fe93d521164a27056866 (patch)
tree8f279a91de8237ce370a14d745940cccfd78ea07 /include
parent66dc830d14a222c9214a8557e9feb1e4a67a3857 (diff)
parenta26f49926da938f47561f386be56a83dd37a496d (diff)
downloadlinux-038911597e17017cee55fe93d521164a27056866.tar.xz
Merge branch 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull lazytime mount option support from Al Viro: "Lazytime stuff from tytso" * 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: ext4: add optimization for the lazytime mount option vfs: add find_inode_nowait() function vfs: add support for a lazytime mount option
Diffstat (limited to 'include')
-rw-r--r--include/linux/backing-dev.h1
-rw-r--r--include/linux/fs.h10
-rw-r--r--include/trace/events/ext4.h30
-rw-r--r--include/trace/events/writeback.h60
-rw-r--r--include/uapi/linux/fs.h4
5 files changed, 103 insertions, 2 deletions
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index d94077fea1f8..aff923ae8c4b 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -55,6 +55,7 @@ struct bdi_writeback {
struct list_head b_dirty; /* dirty inodes */
struct list_head b_io; /* parked for writeback */
struct list_head b_more_io; /* parked for more writeback */
+ struct list_head b_dirty_time; /* time stamps are dirty */
spinlock_t list_lock; /* protects the b_* lists */
};
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0b5b146d0490..447932aed1e1 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1790,8 +1790,12 @@ struct super_operations {
#define __I_DIO_WAKEUP 9
#define I_DIO_WAKEUP (1 << I_DIO_WAKEUP)
#define I_LINKABLE (1 << 10)
+#define I_DIRTY_TIME (1 << 11)
+#define __I_DIRTY_TIME_EXPIRED 12
+#define I_DIRTY_TIME_EXPIRED (1 << __I_DIRTY_TIME_EXPIRED)
#define I_DIRTY (I_DIRTY_SYNC | I_DIRTY_DATASYNC | I_DIRTY_PAGES)
+#define I_DIRTY_ALL (I_DIRTY | I_DIRTY_TIME)
extern void __mark_inode_dirty(struct inode *, int);
static inline void mark_inode_dirty(struct inode *inode)
@@ -1954,6 +1958,7 @@ extern int current_umask(void);
extern void ihold(struct inode * inode);
extern void iput(struct inode *);
+extern int generic_update_time(struct inode *, struct timespec *, int);
static inline struct inode *file_inode(const struct file *f)
{
@@ -2492,6 +2497,11 @@ extern struct inode *ilookup(struct super_block *sb, unsigned long ino);
extern struct inode * iget5_locked(struct super_block *, unsigned long, int (*test)(struct inode *, void *), int (*set)(struct inode *, void *), void *);
extern struct inode * iget_locked(struct super_block *, unsigned long);
+extern struct inode *find_inode_nowait(struct super_block *,
+ unsigned long,
+ int (*match)(struct inode *,
+ unsigned long, void *),
+ void *data);
extern int insert_inode_locked4(struct inode *, unsigned long, int (*test)(struct inode *, void *), void *);
extern int insert_inode_locked(struct inode *);
#ifdef CONFIG_DEBUG_LOCK_ALLOC
diff --git a/include/trace/events/ext4.h b/include/trace/events/ext4.h
index 6cfb841fea7c..6e5abd6d38a2 100644
--- a/include/trace/events/ext4.h
+++ b/include/trace/events/ext4.h
@@ -73,6 +73,36 @@ struct extent_status;
{ FALLOC_FL_ZERO_RANGE, "ZERO_RANGE"})
+TRACE_EVENT(ext4_other_inode_update_time,
+ TP_PROTO(struct inode *inode, ino_t orig_ino),
+
+ TP_ARGS(inode, orig_ino),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field( ino_t, ino )
+ __field( ino_t, orig_ino )
+ __field( uid_t, uid )
+ __field( gid_t, gid )
+ __field( __u16, mode )
+ ),
+
+ TP_fast_assign(
+ __entry->orig_ino = orig_ino;
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->uid = i_uid_read(inode);
+ __entry->gid = i_gid_read(inode);
+ __entry->mode = inode->i_mode;
+ ),
+
+ TP_printk("dev %d,%d orig_ino %lu ino %lu mode 0%o uid %u gid %u",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ (unsigned long) __entry->orig_ino,
+ (unsigned long) __entry->ino, __entry->mode,
+ __entry->uid, __entry->gid)
+);
+
TRACE_EVENT(ext4_free_inode,
TP_PROTO(struct inode *inode),
diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
index 0e9310905413..5a14ead59696 100644
--- a/include/trace/events/writeback.h
+++ b/include/trace/events/writeback.h
@@ -18,6 +18,8 @@
{I_FREEING, "I_FREEING"}, \
{I_CLEAR, "I_CLEAR"}, \
{I_SYNC, "I_SYNC"}, \
+ {I_DIRTY_TIME, "I_DIRTY_TIME"}, \
+ {I_DIRTY_TIME_EXPIRED, "I_DIRTY_TIME_EXPIRED"}, \
{I_REFERENCED, "I_REFERENCED"} \
)
@@ -68,6 +70,7 @@ DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
TP_STRUCT__entry (
__array(char, name, 32)
__field(unsigned long, ino)
+ __field(unsigned long, state)
__field(unsigned long, flags)
),
@@ -78,16 +81,25 @@ DECLARE_EVENT_CLASS(writeback_dirty_inode_template,
strncpy(__entry->name,
bdi->dev ? dev_name(bdi->dev) : "(unknown)", 32);
__entry->ino = inode->i_ino;
+ __entry->state = inode->i_state;
__entry->flags = flags;
),
- TP_printk("bdi %s: ino=%lu flags=%s",
+ TP_printk("bdi %s: ino=%lu state=%s flags=%s",
__entry->name,
__entry->ino,
+ show_inode_state(__entry->state),
show_inode_state(__entry->flags)
)
);
+DEFINE_EVENT(writeback_dirty_inode_template, writeback_mark_inode_dirty,
+
+ TP_PROTO(struct inode *inode, int flags),
+
+ TP_ARGS(inode, flags)
+);
+
DEFINE_EVENT(writeback_dirty_inode_template, writeback_dirty_inode_start,
TP_PROTO(struct inode *inode, int flags),
@@ -596,6 +608,52 @@ DEFINE_EVENT(writeback_single_inode_template, writeback_single_inode,
TP_ARGS(inode, wbc, nr_to_write)
);
+DECLARE_EVENT_CLASS(writeback_lazytime_template,
+ TP_PROTO(struct inode *inode),
+
+ TP_ARGS(inode),
+
+ TP_STRUCT__entry(
+ __field( dev_t, dev )
+ __field(unsigned long, ino )
+ __field(unsigned long, state )
+ __field( __u16, mode )
+ __field(unsigned long, dirtied_when )
+ ),
+
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->state = inode->i_state;
+ __entry->mode = inode->i_mode;
+ __entry->dirtied_when = inode->dirtied_when;
+ ),
+
+ TP_printk("dev %d,%d ino %lu dirtied %lu state %s mode 0%o",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->ino, __entry->dirtied_when,
+ show_inode_state(__entry->state), __entry->mode)
+);
+
+DEFINE_EVENT(writeback_lazytime_template, writeback_lazytime,
+ TP_PROTO(struct inode *inode),
+
+ TP_ARGS(inode)
+);
+
+DEFINE_EVENT(writeback_lazytime_template, writeback_lazytime_iput,
+ TP_PROTO(struct inode *inode),
+
+ TP_ARGS(inode)
+);
+
+DEFINE_EVENT(writeback_lazytime_template, writeback_dirty_inode_enqueue,
+
+ TP_PROTO(struct inode *inode),
+
+ TP_ARGS(inode)
+);
+
#endif /* _TRACE_WRITEBACK_H */
/* This part must be outside protection */
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 3735fa0a6784..9b964a5920af 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -90,6 +90,7 @@ struct inodes_stat_t {
#define MS_KERNMOUNT (1<<22) /* this is a kern_mount call */
#define MS_I_VERSION (1<<23) /* Update inode I_version field */
#define MS_STRICTATIME (1<<24) /* Always perform atime updates */
+#define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */
/* These sb flags are internal to the kernel */
#define MS_NOSEC (1<<28)
@@ -100,7 +101,8 @@ struct inodes_stat_t {
/*
* Superblock flags that can be altered by MS_REMOUNT
*/
-#define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION)
+#define MS_RMT_MASK (MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_I_VERSION|\
+ MS_LAZYTIME)
/*
* Old magic mount flag and mask