diff options
| -rw-r--r-- | fs/ext4/fsync.c | 5 | ||||
| -rw-r--r-- | fs/ext4/page-io.c | 37 |
2 files changed, 13 insertions, 29 deletions
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c index 851ac5b..00a2cb7 100644 --- a/fs/ext4/fsync.c +++ b/fs/ext4/fsync.c @@ -88,6 +88,7 @@ int ext4_flush_completed_IO(struct inode *inode) while (!list_empty(&ei->i_completed_io_list)){ io = list_entry(ei->i_completed_io_list.next, ext4_io_end_t, list); + list_del_init(&io->list); /* * Calling ext4_end_io_nolock() to convert completed * IO to written. @@ -104,11 +105,9 @@ int ext4_flush_completed_IO(struct inode *inode) */ spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); ret = ext4_end_io_nolock(io); - spin_lock_irqsave(&ei->i_completed_io_lock, flags); if (ret < 0) ret2 = ret; - else - list_del_init(&io->list); + spin_lock_irqsave(&ei->i_completed_io_lock, flags); } spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); return (ret2 < 0) ? ret2 : 0; diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 4fa1d70..9eebf44 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -99,28 +99,21 @@ int ext4_end_io_nolock(ext4_io_end_t *io) "list->prev 0x%p\n", io, inode->i_ino, io->list.next, io->list.prev); - if (!(io->flag & EXT4_IO_END_UNWRITTEN)) - return ret; - ret = ext4_convert_unwritten_extents(inode, offset, size); if (ret < 0) { - printk(KERN_EMERG "%s: failed to convert unwritten " - "extents to written extents, error is %d " - "io is still on inode %lu aio dio list\n", - __func__, ret, inode->i_ino); - return ret; + ext4_msg(inode->i_sb, KERN_EMERG, + "failed to convert unwritten extents to written " + "extents -- potential data loss! " + "(inode %lu, offset %llu, size %zd, error %d)", + inode->i_ino, offset, size, ret); } if (io->iocb) aio_complete(io->iocb, io->result, 0); - /* clear the DIO AIO unwritten flag */ - if (io->flag & EXT4_IO_END_UNWRITTEN) { - io->flag &= ~EXT4_IO_END_UNWRITTEN; - /* Wake up anyone waiting on unwritten extent conversion */ - if (atomic_dec_and_test(&EXT4_I(inode)->i_aiodio_unwritten)) - wake_up_all(ext4_ioend_wq(io->inode)); - } + /* Wake up anyone waiting on unwritten extent conversion */ + if (atomic_dec_and_test(&EXT4_I(inode)->i_aiodio_unwritten)) + wake_up_all(ext4_ioend_wq(io->inode)); return ret; } @@ -133,16 +126,15 @@ static void ext4_end_io_work(struct work_struct *work) struct inode *inode = io->inode; struct ext4_inode_info *ei = EXT4_I(inode); unsigned long flags; - int ret; spin_lock_irqsave(&ei->i_completed_io_lock, flags); if (list_empty(&io->list)) { spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); goto free; } - spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); if (!mutex_trylock(&inode->i_mutex)) { + spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); /* * Requeue the work instead of waiting so that the work * items queued after this can be processed. @@ -159,16 +151,9 @@ static void ext4_end_io_work(struct work_struct *work) io->flag |= EXT4_IO_END_QUEUED; return; } - ret = ext4_end_io_nolock(io); - if (ret < 0) { - mutex_unlock(&inode->i_mutex); - return; - } - - spin_lock_irqsave(&ei->i_completed_io_lock, flags); - if (!list_empty(&io->list)) - list_del_init(&io->list); + list_del_init(&io->list); spin_unlock_irqrestore(&ei->i_completed_io_lock, flags); + (void) ext4_end_io_nolock(io); mutex_unlock(&inode->i_mutex); free: ext4_free_io_end(io); |
