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-rw-r--r--fs/fs-writeback.c76
1 files changed, 61 insertions, 15 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 2d609a5fbfe..073657f755d 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -66,15 +66,21 @@ int writeback_in_progress(struct backing_dev_info *bdi)
}
EXPORT_SYMBOL(writeback_in_progress);
-static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
+struct backing_dev_info *inode_to_bdi(struct inode *inode)
{
- struct super_block *sb = inode->i_sb;
+ struct super_block *sb;
- if (sb_is_blkdev_sb(sb))
- return inode->i_mapping->backing_dev_info;
+ if (!inode)
+ return &noop_backing_dev_info;
+ sb = inode->i_sb;
+#ifdef CONFIG_BLOCK
+ if (sb_is_blkdev_sb(sb))
+ return blk_get_backing_dev_info(I_BDEV(inode));
+#endif
return sb->s_bdi;
}
+EXPORT_SYMBOL_GPL(inode_to_bdi);
static inline struct inode *wb_inode(struct list_head *head)
{
@@ -247,14 +253,19 @@ 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 +273,21 @@ 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 +328,12 @@ 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 +457,8 @@ 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 +505,13 @@ __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 +531,10 @@ __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 +582,7 @@ 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 +597,7 @@ 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 +739,7 @@ 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 +1177,20 @@ 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 +1198,9 @@ 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 +1208,21 @@ 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 +1269,10 @@ 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-18 01:48:00 +0000