From adcadfa8f373f301e9f622fbf45957adf2d98622 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Sat, 29 Jun 2013 21:42:20 +0400 Subject: fuse: Getting file for writeback helper There will be a .writepageS callback implementation which will need to get a fuse_file out of a fuse_inode, thus make a helper for this. Signed-off-by: Maxim Patlasov Signed-off-by: Pavel Emelyanov Signed-off-by: Miklos Szeredi --- fs/fuse/file.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) (limited to 'fs/fuse') diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 4598345ab87d..aab6d05355e4 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1494,6 +1494,20 @@ static void fuse_writepage_end(struct fuse_conn *fc, struct fuse_req *req) fuse_writepage_free(fc, req); } +static struct fuse_file *fuse_write_file(struct fuse_conn *fc, + struct fuse_inode *fi) +{ + struct fuse_file *ff; + + spin_lock(&fc->lock); + BUG_ON(list_empty(&fi->write_files)); + ff = list_entry(fi->write_files.next, struct fuse_file, write_entry); + fuse_file_get(ff); + spin_unlock(&fc->lock); + + return ff; +} + static int fuse_writepage_locked(struct page *page) { struct address_space *mapping = page->mapping; @@ -1501,7 +1515,6 @@ static int fuse_writepage_locked(struct page *page) struct fuse_conn *fc = get_fuse_conn(inode); struct fuse_inode *fi = get_fuse_inode(inode); struct fuse_req *req; - struct fuse_file *ff; struct page *tmp_page; set_page_writeback(page); @@ -1515,13 +1528,8 @@ static int fuse_writepage_locked(struct page *page) if (!tmp_page) goto err_free; - spin_lock(&fc->lock); - BUG_ON(list_empty(&fi->write_files)); - ff = list_entry(fi->write_files.next, struct fuse_file, write_entry); - req->ff = fuse_file_get(ff); - spin_unlock(&fc->lock); - - fuse_write_fill(req, ff, page_offset(page), 0); + req->ff = fuse_write_file(fc, fi); + fuse_write_fill(req, req->ff, page_offset(page), 0); copy_highpage(tmp_page, page); req->misc.write.in.write_flags |= FUSE_WRITE_CACHE; -- cgit v1.2.3