diff options
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/ext4.h | 6 | ||||
| -rw-r--r-- | fs/ext4/page-io.c | 33 | ||||
| -rw-r--r-- | fs/ext4/super.c | 1 |
3 files changed, 13 insertions, 27 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 0ccda0c9682e..d93393eb5f2d 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -194,8 +194,7 @@ struct mpage_da_data { */ #define EXT4_IO_END_UNWRITTEN 0x0001 #define EXT4_IO_END_ERROR 0x0002 -#define EXT4_IO_END_QUEUED 0x0004 -#define EXT4_IO_END_DIRECT 0x0008 +#define EXT4_IO_END_DIRECT 0x0004 struct ext4_io_page { struct page *p_page; @@ -217,7 +216,6 @@ typedef struct ext4_io_end { unsigned int flag; /* unwritten or not */ loff_t offset; /* offset in the file */ ssize_t size; /* size of the extent */ - struct work_struct work; /* data work queue */ struct kiocb *iocb; /* iocb struct for AIO */ int result; /* error value for AIO */ int num_io_pages; /* for writepages() */ @@ -929,6 +927,7 @@ struct ext4_inode_info { spinlock_t i_completed_io_lock; atomic_t i_ioend_count; /* Number of outstanding io_end structs */ atomic_t i_unwritten; /* Nr. of inflight conversions pending */ + struct work_struct i_unwritten_work; /* deferred extent conversion */ spinlock_t i_block_reservation_lock; @@ -2538,6 +2537,7 @@ extern void ext4_exit_pageio(void); extern void ext4_ioend_wait(struct inode *); extern void ext4_free_io_end(ext4_io_end_t *io); extern ext4_io_end_t *ext4_init_io_end(struct inode *inode, gfp_t flags); +extern void ext4_end_io_work(struct work_struct *work); extern void ext4_io_submit(struct ext4_io_submit *io); extern int ext4_bio_write_page(struct ext4_io_submit *io, struct page *page, diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 05795f10e55a..a0290176ee75 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -151,16 +151,13 @@ void ext4_add_complete_io(ext4_io_end_t *io_end) wq = EXT4_SB(io_end->inode->i_sb)->dio_unwritten_wq; spin_lock_irqsave(&ei->i_completed_io_lock, flags); - if (list_empty(&ei->i_completed_io_list)) { - io_end->flag |= EXT4_IO_END_QUEUED; - queue_work(wq, &io_end->work); - } + if (list_empty(&ei->i_completed_io_list)) + queue_work(wq, &ei->i_unwritten_work); list_add_tail(&io_end->list, &ei->i_completed_io_list); spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); } -static int ext4_do_flush_completed_IO(struct inode *inode, - ext4_io_end_t *work_io) +static int ext4_do_flush_completed_IO(struct inode *inode) { ext4_io_end_t *io; struct list_head unwritten, complete, to_free; @@ -191,19 +188,7 @@ static int ext4_do_flush_completed_IO(struct inode *inode, while (!list_empty(&complete)) { io = list_entry(complete.next, ext4_io_end_t, list); io->flag &= ~EXT4_IO_END_UNWRITTEN; - /* end_io context can not be destroyed now because it still - * used by queued worker. Worker thread will destroy it later */ - if (io->flag & EXT4_IO_END_QUEUED) - list_del_init(&io->list); - else - list_move(&io->list, &to_free); - } - /* If we are called from worker context, it is time to clear queued - * flag, and destroy it's end_io if it was converted already */ - if (work_io) { - work_io->flag &= ~EXT4_IO_END_QUEUED; - if (!(work_io->flag & EXT4_IO_END_UNWRITTEN)) - list_add_tail(&work_io->list, &to_free); + list_move(&io->list, &to_free); } spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); @@ -218,10 +203,11 @@ static int ext4_do_flush_completed_IO(struct inode *inode, /* * work on completed aio dio IO, to convert unwritten extents to extents */ -static void ext4_end_io_work(struct work_struct *work) +void ext4_end_io_work(struct work_struct *work) { - ext4_io_end_t *io = container_of(work, ext4_io_end_t, work); - ext4_do_flush_completed_IO(io->inode, io); + struct ext4_inode_info *ei = container_of(work, struct ext4_inode_info, + i_unwritten_work); + ext4_do_flush_completed_IO(&ei->vfs_inode); } int ext4_flush_unwritten_io(struct inode *inode) @@ -229,7 +215,7 @@ int ext4_flush_unwritten_io(struct inode *inode) int ret; WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex) && !(inode->i_state & I_FREEING)); - ret = ext4_do_flush_completed_IO(inode, NULL); + ret = ext4_do_flush_completed_IO(inode); ext4_unwritten_wait(inode); return ret; } @@ -240,7 +226,6 @@ ext4_io_end_t *ext4_init_io_end(struct inode *inode, gfp_t flags) if (io) { atomic_inc(&EXT4_I(inode)->i_ioend_count); io->inode = inode; - INIT_WORK(&io->work, ext4_end_io_work); INIT_LIST_HEAD(&io->list); } return io; diff --git a/fs/ext4/super.c b/fs/ext4/super.c index d5d336bd2180..dc0fb7b942cf 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -960,6 +960,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb) ei->i_datasync_tid = 0; atomic_set(&ei->i_ioend_count, 0); atomic_set(&ei->i_unwritten, 0); + INIT_WORK(&ei->i_unwritten_work, ext4_end_io_work); return &ei->vfs_inode; } |