diff options
Diffstat (limited to 'fs/gfs2/aops.c')
-rw-r--r-- | fs/gfs2/aops.c | 47 |
1 files changed, 2 insertions, 45 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index 72c9560f4467..d4af283fc888 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -335,7 +335,7 @@ static int gfs2_write_cache_jdata(struct address_space *mapping, int done = 0; struct pagevec pvec; int nr_pages; - pgoff_t uninitialized_var(writeback_index); + pgoff_t writeback_index; pgoff_t index; pgoff_t end; pgoff_t done_index; @@ -468,21 +468,10 @@ static int stuffed_readpage(struct gfs2_inode *ip, struct page *page) } -/** - * __gfs2_readpage - readpage - * @file: The file to read a page for - * @page: The page to read - * - * This is the core of gfs2's readpage. It's used by the internal file - * reading code as in that case we already hold the glock. Also it's - * called by gfs2_readpage() once the required lock has been granted. - */ - static int __gfs2_readpage(void *file, struct page *page) { struct gfs2_inode *ip = GFS2_I(page->mapping->host); struct gfs2_sbd *sdp = GFS2_SB(page->mapping->host); - int error; if (i_blocksize(page->mapping->host) == PAGE_SIZE && @@ -505,36 +494,11 @@ static int __gfs2_readpage(void *file, struct page *page) * gfs2_readpage - read a page of a file * @file: The file to read * @page: The page of the file - * - * This deals with the locking required. We have to unlock and - * relock the page in order to get the locking in the right - * order. */ static int gfs2_readpage(struct file *file, struct page *page) { - struct address_space *mapping = page->mapping; - struct gfs2_inode *ip = GFS2_I(mapping->host); - struct gfs2_holder gh; - int error; - - unlock_page(page); - gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh); - error = gfs2_glock_nq(&gh); - if (unlikely(error)) - goto out; - error = AOP_TRUNCATED_PAGE; - lock_page(page); - if (page->mapping == mapping && !PageUptodate(page)) - error = __gfs2_readpage(file, page); - else - unlock_page(page); - gfs2_glock_dq(&gh); -out: - gfs2_holder_uninit(&gh); - if (error && error != AOP_TRUNCATED_PAGE) - lock_page(page); - return error; + return __gfs2_readpage(file, page); } /** @@ -598,16 +562,9 @@ static void gfs2_readahead(struct readahead_control *rac) { struct inode *inode = rac->mapping->host; struct gfs2_inode *ip = GFS2_I(inode); - struct gfs2_holder gh; - gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &gh); - if (gfs2_glock_nq(&gh)) - goto out_uninit; if (!gfs2_is_stuffed(ip)) mpage_readahead(rac, gfs2_block_map); - gfs2_glock_dq(&gh); -out_uninit: - gfs2_holder_uninit(&gh); } /** |