diff options
Diffstat (limited to 'fs/f2fs/data.c')
| -rw-r--r-- | fs/f2fs/data.c | 71 |
1 files changed, 55 insertions, 16 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 91ff93b0b0f4..035f9a345cdf 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -68,7 +68,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs, struct buffer_head *bh_result) { struct f2fs_inode_info *fi = F2FS_I(inode); +#ifdef CONFIG_F2FS_STAT_FS struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); +#endif pgoff_t start_fofs, end_fofs; block_t start_blkaddr; @@ -78,7 +80,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs, return 0; } +#ifdef CONFIG_F2FS_STAT_FS sbi->total_hit_ext++; +#endif start_fofs = fi->ext.fofs; end_fofs = fi->ext.fofs + fi->ext.len - 1; start_blkaddr = fi->ext.blk_addr; @@ -96,7 +100,9 @@ static int check_extent_cache(struct inode *inode, pgoff_t pgofs, else bh_result->b_size = UINT_MAX; +#ifdef CONFIG_F2FS_STAT_FS sbi->read_hit_ext++; +#endif read_unlock(&fi->ext.ext_lock); return 1; } @@ -199,7 +205,7 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) if (dn.data_blkaddr == NEW_ADDR) return ERR_PTR(-EINVAL); - page = grab_cache_page(mapping, index); + page = grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); if (!page) return ERR_PTR(-ENOMEM); @@ -233,18 +239,23 @@ struct page *get_lock_data_page(struct inode *inode, pgoff_t index) struct page *page; int err; +repeat: + page = grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); + if (!page) + return ERR_PTR(-ENOMEM); + set_new_dnode(&dn, inode, NULL, NULL, 0); err = get_dnode_of_data(&dn, index, LOOKUP_NODE); - if (err) + if (err) { + f2fs_put_page(page, 1); return ERR_PTR(err); + } f2fs_put_dnode(&dn); - if (dn.data_blkaddr == NULL_ADDR) + if (dn.data_blkaddr == NULL_ADDR) { + f2fs_put_page(page, 1); return ERR_PTR(-ENOENT); -repeat: - page = grab_cache_page(mapping, index); - if (!page) - return ERR_PTR(-ENOMEM); + } if (PageUptodate(page)) return page; @@ -274,9 +285,10 @@ repeat: * * Also, caller should grab and release a mutex by calling mutex_lock_op() and * mutex_unlock_op(). + * Note that, npage is set only by make_empty_dir. */ -struct page *get_new_data_page(struct inode *inode, pgoff_t index, - bool new_i_size) +struct page *get_new_data_page(struct inode *inode, + struct page *npage, pgoff_t index, bool new_i_size) { struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct address_space *mapping = inode->i_mapping; @@ -284,18 +296,20 @@ struct page *get_new_data_page(struct inode *inode, pgoff_t index, struct dnode_of_data dn; int err; - set_new_dnode(&dn, inode, NULL, NULL, 0); + set_new_dnode(&dn, inode, npage, npage, 0); err = get_dnode_of_data(&dn, index, ALLOC_NODE); if (err) return ERR_PTR(err); if (dn.data_blkaddr == NULL_ADDR) { if (reserve_new_block(&dn)) { - f2fs_put_dnode(&dn); + if (!npage) + f2fs_put_dnode(&dn); return ERR_PTR(-ENOSPC); } } - f2fs_put_dnode(&dn); + if (!npage) + f2fs_put_dnode(&dn); repeat: page = grab_cache_page(mapping, index); if (!page) @@ -325,6 +339,8 @@ repeat: if (new_i_size && i_size_read(inode) < ((index + 1) << PAGE_CACHE_SHIFT)) { i_size_write(inode, ((index + 1) << PAGE_CACHE_SHIFT)); + /* Only the directory inode sets new_i_size */ + set_inode_flag(F2FS_I(inode), FI_UPDATE_DIR); mark_inode_dirty_sync(inode); } return page; @@ -481,8 +497,9 @@ int do_write_data_page(struct page *page) * If current allocation needs SSR, * it had better in-place writes for updated data. */ - if (old_blk_addr != NEW_ADDR && !is_cold_data(page) && - need_inplace_update(inode)) { + if (unlikely(old_blk_addr != NEW_ADDR && + !is_cold_data(page) && + need_inplace_update(inode))) { rewrite_data_page(F2FS_SB(inode->i_sb), page, old_blk_addr); } else { @@ -684,6 +701,27 @@ err: return err; } +static int f2fs_write_end(struct file *file, + struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *page, void *fsdata) +{ + struct inode *inode = page->mapping->host; + + SetPageUptodate(page); + set_page_dirty(page); + + if (pos + copied > i_size_read(inode)) { + i_size_write(inode, pos + copied); + mark_inode_dirty(inode); + update_inode_page(inode); + } + + unlock_page(page); + page_cache_release(page); + return copied; +} + static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, loff_t offset, unsigned long nr_segs) { @@ -698,7 +736,8 @@ static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb, get_data_block_ro); } -static void f2fs_invalidate_data_page(struct page *page, unsigned long offset) +static void f2fs_invalidate_data_page(struct page *page, unsigned int offset, + unsigned int length) { struct inode *inode = page->mapping->host; struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); @@ -740,7 +779,7 @@ const struct address_space_operations f2fs_dblock_aops = { .writepage = f2fs_write_data_page, .writepages = f2fs_write_data_pages, .write_begin = f2fs_write_begin, - .write_end = nobh_write_end, + .write_end = f2fs_write_end, .set_page_dirty = f2fs_set_data_page_dirty, .invalidatepage = f2fs_invalidate_data_page, .releasepage = f2fs_release_data_page, |