From f30bf3e40f80ef50c17f55271deae3abc03e793e Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Mon, 6 Apr 2009 19:01:38 -0700 Subject: nilfs2: fix missed-sync issue for do_sync_mapping_range() Chris Mason pointed out that there is a missed sync issue in nilfs_writepages(): On Wed, 17 Dec 2008 21:52:55 -0500, Chris Mason wrote: > It looks like nilfs_writepage ignores WB_SYNC_NONE, which is used by > do_sync_mapping_range(). where WB_SYNC_NONE in do_sync_mapping_range() was replaced with WB_SYNC_ALL by Nick's patch (commit: ee53a891f47444c53318b98dac947ede963db400). This fixes the problem by letting nilfs_writepages() write out the log of file data within the range if sync_mode is WB_SYNC_ALL. This involves removal of nilfs_file_aio_write() which was previously needed to ensure O_SYNC sync writes. Cc: Chris Mason Signed-off-by: Ryusuke Konishi Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nilfs2/file.c | 27 +++------------------------ 1 file changed, 3 insertions(+), 24 deletions(-) (limited to 'fs/nilfs2/file.c') diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c index 8031086..cd38124 100644 --- a/fs/nilfs2/file.c +++ b/fs/nilfs2/file.c @@ -44,35 +44,14 @@ int nilfs_sync_file(struct file *file, struct dentry *dentry, int datasync) return 0; if (datasync) - err = nilfs_construct_dsync_segment(inode->i_sb, inode); + err = nilfs_construct_dsync_segment(inode->i_sb, inode, 0, + LLONG_MAX); else err = nilfs_construct_segment(inode->i_sb); return err; } -static ssize_t -nilfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) -{ - struct file *file = iocb->ki_filp; - struct inode *inode = file->f_dentry->d_inode; - ssize_t ret; - - ret = generic_file_aio_write(iocb, iov, nr_segs, pos); - if (ret <= 0) - return ret; - - if ((file->f_flags & O_SYNC) || IS_SYNC(inode)) { - int err; - - err = nilfs_construct_dsync_segment(inode->i_sb, inode); - if (unlikely(err)) - return err; - } - return ret; -} - static int nilfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { struct page *page = vmf->page; @@ -160,7 +139,7 @@ struct file_operations nilfs_file_operations = { .read = do_sync_read, .write = do_sync_write, .aio_read = generic_file_aio_read, - .aio_write = nilfs_file_aio_write, + .aio_write = generic_file_aio_write, .ioctl = nilfs_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = nilfs_compat_ioctl, -- cgit v1.1