summaryrefslogtreecommitdiffstats
path: root/fs
diff options
context:
space:
mode:
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/inode.c6
-rw-r--r--fs/fs-writeback.c62
-rw-r--r--fs/gfs2/file.c4
-rw-r--r--fs/inode.c56
-rw-r--r--fs/jfs/file.c2
-rw-r--r--fs/libfs.c2
-rw-r--r--fs/proc_namespace.c1
-rw-r--r--fs/sync.c8
8 files changed, 110 insertions, 31 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 5653fa42930b..628df5ba44a6 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4840,11 +4840,17 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
* If the inode is marked synchronous, we don't honour that here - doing
* so would cause a commit on atime updates, which we don't bother doing.
* We handle synchronous inodes at the highest possible level.
+ *
+ * If only the I_DIRTY_TIME flag is set, we can skip everything. If
+ * I_DIRTY_TIME and I_DIRTY_SYNC is set, the only inode fields we need
+ * to copy into the on-disk inode structure are the timestamp files.
*/
void ext4_dirty_inode(struct inode *inode, int flags)
{
handle_t *handle;
+ if (flags == I_DIRTY_TIME)
+ return;
handle = ext4_journal_start(inode, EXT4_HT_INODE, 2);
if (IS_ERR(handle))
goto out;
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 2d609a5fbfea..004686191354 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -247,14 +247,19 @@ static bool inode_dirtied_after(struct inode *inode, unsigned long t)
return ret;
}
+#define EXPIRE_DIRTY_ATIME 0x0001
+
/*
* Move expired (dirtied before work->older_than_this) dirty inodes from
* @delaying_queue to @dispatch_queue.
*/
static int move_expired_inodes(struct list_head *delaying_queue,
struct list_head *dispatch_queue,
+ int flags,
struct wb_writeback_work *work)
{
+ unsigned long *older_than_this = NULL;
+ unsigned long expire_time;
LIST_HEAD(tmp);
struct list_head *pos, *node;
struct super_block *sb = NULL;
@@ -262,13 +267,21 @@ static int move_expired_inodes(struct list_head *delaying_queue,
int do_sb_sort = 0;
int moved = 0;
+ if ((flags & EXPIRE_DIRTY_ATIME) == 0)
+ older_than_this = work->older_than_this;
+ else if ((work->reason == WB_REASON_SYNC) == 0) {
+ expire_time = jiffies - (HZ * 86400);
+ older_than_this = &expire_time;
+ }
while (!list_empty(delaying_queue)) {
inode = wb_inode(delaying_queue->prev);
- if (work->older_than_this &&
- inode_dirtied_after(inode, *work->older_than_this))
+ if (older_than_this &&
+ inode_dirtied_after(inode, *older_than_this))
break;
list_move(&inode->i_wb_list, &tmp);
moved++;
+ if (flags & EXPIRE_DIRTY_ATIME)
+ set_bit(__I_DIRTY_TIME_EXPIRED, &inode->i_state);
if (sb_is_blkdev_sb(inode->i_sb))
continue;
if (sb && sb != inode->i_sb)
@@ -309,9 +322,12 @@ out:
static void queue_io(struct bdi_writeback *wb, struct wb_writeback_work *work)
{
int moved;
+
assert_spin_locked(&wb->list_lock);
list_splice_init(&wb->b_more_io, &wb->b_io);
- moved = move_expired_inodes(&wb->b_dirty, &wb->b_io, work);
+ moved = move_expired_inodes(&wb->b_dirty, &wb->b_io, 0, work);
+ moved += move_expired_inodes(&wb->b_dirty_time, &wb->b_io,
+ EXPIRE_DIRTY_ATIME, work);
trace_writeback_queue_io(wb, work, moved);
}
@@ -435,6 +451,8 @@ static void requeue_inode(struct inode *inode, struct bdi_writeback *wb,
* updates after data IO completion.
*/
redirty_tail(inode, wb);
+ } else if (inode->i_state & I_DIRTY_TIME) {
+ list_move(&inode->i_wb_list, &wb->b_dirty_time);
} else {
/* The inode is clean. Remove from writeback lists. */
list_del_init(&inode->i_wb_list);
@@ -481,7 +499,13 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
spin_lock(&inode->i_lock);
dirty = inode->i_state & I_DIRTY;
- inode->i_state &= ~I_DIRTY;
+ if (((dirty & (I_DIRTY_SYNC | I_DIRTY_DATASYNC)) &&
+ (inode->i_state & I_DIRTY_TIME)) ||
+ (inode->i_state & I_DIRTY_TIME_EXPIRED)) {
+ dirty |= I_DIRTY_TIME | I_DIRTY_TIME_EXPIRED;
+ trace_writeback_lazytime(inode);
+ }
+ inode->i_state &= ~dirty;
/*
* Paired with smp_mb() in __mark_inode_dirty(). This allows
@@ -501,8 +525,10 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
spin_unlock(&inode->i_lock);
+ if (dirty & I_DIRTY_TIME)
+ mark_inode_dirty_sync(inode);
/* Don't write the inode if only I_DIRTY_PAGES was set */
- if (dirty & (I_DIRTY_SYNC | I_DIRTY_DATASYNC)) {
+ if (dirty & ~I_DIRTY_PAGES) {
int err = write_inode(inode, wbc);
if (ret == 0)
ret = err;
@@ -550,7 +576,7 @@ writeback_single_inode(struct inode *inode, struct bdi_writeback *wb,
* make sure inode is on some writeback list and leave it there unless
* we have completely cleaned the inode.
*/
- if (!(inode->i_state & I_DIRTY) &&
+ if (!(inode->i_state & I_DIRTY_ALL) &&
(wbc->sync_mode != WB_SYNC_ALL ||
!mapping_tagged(inode->i_mapping, PAGECACHE_TAG_WRITEBACK)))
goto out;
@@ -565,7 +591,7 @@ writeback_single_inode(struct inode *inode, struct bdi_writeback *wb,
* If inode is clean, remove it from writeback lists. Otherwise don't
* touch it. See comment above for explanation.
*/
- if (!(inode->i_state & I_DIRTY))
+ if (!(inode->i_state & I_DIRTY_ALL))
list_del_init(&inode->i_wb_list);
spin_unlock(&wb->list_lock);
inode_sync_complete(inode);
@@ -707,7 +733,7 @@ static long writeback_sb_inodes(struct super_block *sb,
wrote += write_chunk - wbc.nr_to_write;
spin_lock(&wb->list_lock);
spin_lock(&inode->i_lock);
- if (!(inode->i_state & I_DIRTY))
+ if (!(inode->i_state & I_DIRTY_ALL))
wrote++;
requeue_inode(inode, wb, &wbc);
inode_sync_complete(inode);
@@ -1145,16 +1171,20 @@ static noinline void block_dump___mark_inode_dirty(struct inode *inode)
* page->mapping->host, so the page-dirtying time is recorded in the internal
* blockdev inode.
*/
+#define I_DIRTY_INODE (I_DIRTY_SYNC | I_DIRTY_DATASYNC)
void __mark_inode_dirty(struct inode *inode, int flags)
{
struct super_block *sb = inode->i_sb;
struct backing_dev_info *bdi = NULL;
+ int dirtytime;
+
+ trace_writeback_mark_inode_dirty(inode, flags);
/*
* Don't do this for I_DIRTY_PAGES - that doesn't actually
* dirty the inode itself
*/
- if (flags & (I_DIRTY_SYNC | I_DIRTY_DATASYNC)) {
+ if (flags & (I_DIRTY_SYNC | I_DIRTY_DATASYNC | I_DIRTY_TIME)) {
trace_writeback_dirty_inode_start(inode, flags);
if (sb->s_op->dirty_inode)
@@ -1162,6 +1192,9 @@ void __mark_inode_dirty(struct inode *inode, int flags)
trace_writeback_dirty_inode(inode, flags);
}
+ if (flags & I_DIRTY_INODE)
+ flags &= ~I_DIRTY_TIME;
+ dirtytime = flags & I_DIRTY_TIME;
/*
* Paired with smp_mb() in __writeback_single_inode() for the
@@ -1169,16 +1202,21 @@ void __mark_inode_dirty(struct inode *inode, int flags)
*/
smp_mb();
- if ((inode->i_state & flags) == flags)
+ if (((inode->i_state & flags) == flags) ||
+ (dirtytime && (inode->i_state & I_DIRTY_INODE)))
return;
if (unlikely(block_dump))
block_dump___mark_inode_dirty(inode);
spin_lock(&inode->i_lock);
+ if (dirtytime && (inode->i_state & I_DIRTY_INODE))
+ goto out_unlock_inode;
if ((inode->i_state & flags) != flags) {
const int was_dirty = inode->i_state & I_DIRTY;
+ if (flags & I_DIRTY_INODE)
+ inode->i_state &= ~I_DIRTY_TIME;
inode->i_state |= flags;
/*
@@ -1225,8 +1263,10 @@ void __mark_inode_dirty(struct inode *inode, int flags)
}
inode->dirtied_when = jiffies;
- list_move(&inode->i_wb_list, &bdi->wb.b_dirty);
+ list_move(&inode->i_wb_list, dirtytime ?
+ &bdi->wb.b_dirty_time : &bdi->wb.b_dirty);
spin_unlock(&bdi->wb.list_lock);
+ trace_writeback_dirty_inode_enqueue(inode);
if (wakeup_bdi)
bdi_wakeup_thread_delayed(bdi);
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 6e600abf694a..15c44cf457cc 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -655,7 +655,7 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end,
{
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
- int sync_state = inode->i_state & I_DIRTY;
+ int sync_state = inode->i_state & I_DIRTY_ALL;
struct gfs2_inode *ip = GFS2_I(inode);
int ret = 0, ret1 = 0;
@@ -668,7 +668,7 @@ static int gfs2_fsync(struct file *file, loff_t start, loff_t end,
if (!gfs2_is_jdata(ip))
sync_state &= ~I_DIRTY_PAGES;
if (datasync)
- sync_state &= ~I_DIRTY_SYNC;
+ sync_state &= ~(I_DIRTY_SYNC | I_DIRTY_TIME);
if (sync_state) {
ret = sync_inode_metadata(inode, 1);
diff --git a/fs/inode.c b/fs/inode.c
index aa149e7262ac..4feb85cc125f 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -18,6 +18,7 @@
#include <linux/buffer_head.h> /* for inode_has_buffers */
#include <linux/ratelimit.h>
#include <linux/list_lru.h>
+#include <trace/events/writeback.h>
#include "internal.h"
/*
@@ -30,7 +31,7 @@
* inode_sb_list_lock protects:
* sb->s_inodes, inode->i_sb_list
* bdi->wb.list_lock protects:
- * bdi->wb.b_{dirty,io,more_io}, inode->i_wb_list
+ * bdi->wb.b_{dirty,io,more_io,dirty_time}, inode->i_wb_list
* inode_hash_lock protects:
* inode_hashtable, inode->i_hash
*
@@ -416,7 +417,8 @@ static void inode_lru_list_add(struct inode *inode)
*/
void inode_add_lru(struct inode *inode)
{
- if (!(inode->i_state & (I_DIRTY | I_SYNC | I_FREEING | I_WILL_FREE)) &&
+ if (!(inode->i_state & (I_DIRTY_ALL | I_SYNC |
+ I_FREEING | I_WILL_FREE)) &&
!atomic_read(&inode->i_count) && inode->i_sb->s_flags & MS_ACTIVE)
inode_lru_list_add(inode);
}
@@ -647,7 +649,7 @@ int invalidate_inodes(struct super_block *sb, bool kill_dirty)
spin_unlock(&inode->i_lock);
continue;
}
- if (inode->i_state & I_DIRTY && !kill_dirty) {
+ if (inode->i_state & I_DIRTY_ALL && !kill_dirty) {
spin_unlock(&inode->i_lock);
busy = 1;
continue;
@@ -1432,11 +1434,20 @@ static void iput_final(struct inode *inode)
*/
void iput(struct inode *inode)
{
- if (inode) {
- BUG_ON(inode->i_state & I_CLEAR);
-
- if (atomic_dec_and_lock(&inode->i_count, &inode->i_lock))
- iput_final(inode);
+ if (!inode)
+ return;
+ BUG_ON(inode->i_state & I_CLEAR);
+retry:
+ if (atomic_dec_and_lock(&inode->i_count, &inode->i_lock)) {
+ if (inode->i_nlink && (inode->i_state & I_DIRTY_TIME)) {
+ atomic_inc(&inode->i_count);
+ inode->i_state &= ~I_DIRTY_TIME;
+ spin_unlock(&inode->i_lock);
+ trace_writeback_lazytime_iput(inode);
+ mark_inode_dirty_sync(inode);
+ goto retry;
+ }
+ iput_final(inode);
}
}
EXPORT_SYMBOL(iput);
@@ -1495,14 +1506,9 @@ static int relatime_need_update(struct vfsmount *mnt, struct inode *inode,
return 0;
}
-/*
- * This does the actual work of updating an inodes time or version. Must have
- * had called mnt_want_write() before calling this.
- */
-static int update_time(struct inode *inode, struct timespec *time, int flags)
+int generic_update_time(struct inode *inode, struct timespec *time, int flags)
{
- if (inode->i_op->update_time)
- return inode->i_op->update_time(inode, time, flags);
+ int iflags = I_DIRTY_TIME;
if (flags & S_ATIME)
inode->i_atime = *time;
@@ -1512,9 +1518,27 @@ static int update_time(struct inode *inode, struct timespec *time, int flags)
inode->i_ctime = *time;
if (flags & S_MTIME)
inode->i_mtime = *time;
- mark_inode_dirty_sync(inode);
+
+ if (!(inode->i_sb->s_flags & MS_LAZYTIME) || (flags & S_VERSION))
+ iflags |= I_DIRTY_SYNC;
+ __mark_inode_dirty(inode, iflags);
return 0;
}
+EXPORT_SYMBOL(generic_update_time);
+
+/*
+ * This does the actual work of updating an inodes time or version. Must have
+ * had called mnt_want_write() before calling this.
+ */
+static int update_time(struct inode *inode, struct timespec *time, int flags)
+{
+ int (*update_time)(struct inode *, struct timespec *, int);
+
+ update_time = inode->i_op->update_time ? inode->i_op->update_time :
+ generic_update_time;
+
+ return update_time(inode, time, flags);
+}
/**
* touch_atime - update the access time
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index 33aa0cc1f8b8..10815f8dfd8b 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -39,7 +39,7 @@ int jfs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
return rc;
mutex_lock(&inode->i_mutex);
- if (!(inode->i_state & I_DIRTY) ||
+ if (!(inode->i_state & I_DIRTY_ALL) ||
(datasync && !(inode->i_state & I_DIRTY_DATASYNC))) {
/* Make sure committed changes hit the disk */
jfs_flush_journal(JFS_SBI(inode->i_sb)->log, 1);
diff --git a/fs/libfs.c b/fs/libfs.c
index 005843ce5dbd..b2ffdb045be4 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -948,7 +948,7 @@ int __generic_file_fsync(struct file *file, loff_t start, loff_t end,
mutex_lock(&inode->i_mutex);
ret = sync_mapping_buffers(inode->i_mapping);
- if (!(inode->i_state & I_DIRTY))
+ if (!(inode->i_state & I_DIRTY_ALL))
goto out;
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
goto out;
diff --git a/fs/proc_namespace.c b/fs/proc_namespace.c
index 0f96f71ab32b..8db932da4009 100644
--- a/fs/proc_namespace.c
+++ b/fs/proc_namespace.c
@@ -44,6 +44,7 @@ static int show_sb_opts(struct seq_file *m, struct super_block *sb)
{ MS_SYNCHRONOUS, ",sync" },
{ MS_DIRSYNC, ",dirsync" },
{ MS_MANDLOCK, ",mand" },
+ { MS_LAZYTIME, ",lazytime" },
{ 0, NULL }
};
const struct proc_fs_info *fs_infop;
diff --git a/fs/sync.c b/fs/sync.c
index 01d9f18a70b5..fbc98ee62044 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -177,8 +177,16 @@ SYSCALL_DEFINE1(syncfs, int, fd)
*/
int vfs_fsync_range(struct file *file, loff_t start, loff_t end, int datasync)
{
+ struct inode *inode = file->f_mapping->host;
+
if (!file->f_op->fsync)
return -EINVAL;
+ if (!datasync && (inode->i_state & I_DIRTY_TIME)) {
+ spin_lock(&inode->i_lock);
+ inode->i_state &= ~I_DIRTY_TIME;
+ spin_unlock(&inode->i_lock);
+ mark_inode_dirty_sync(inode);
+ }
return file->f_op->fsync(file, start, end, datasync);
}
EXPORT_SYMBOL(vfs_fsync_range);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 22:21:28 +0000