diff options
| -rw-r--r-- | fs/ext4/inline.c | 24 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 69 | ||||
| -rw-r--r-- | fs/ext4/xattr.h | 12 |
3 files changed, 85 insertions, 20 deletions
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 320ff6fe5d8c..01274b1e7d40 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -747,6 +747,30 @@ out: return copied; } +struct buffer_head * +ext4_journalled_write_inline_data(struct inode *inode, + unsigned len, + struct page *page) +{ + int ret; + void *kaddr; + struct ext4_iloc iloc; + + ret = ext4_get_inode_loc(inode, &iloc); + if (ret) { + ext4_std_error(inode->i_sb, ret); + return NULL; + } + + down_write(&EXT4_I(inode)->xattr_sem); + kaddr = kmap_atomic(page); + ext4_write_inline_data(inode, &iloc, kaddr, 0, len); + kunmap_atomic(kaddr); + up_write(&EXT4_I(inode)->xattr_sem); + + return iloc.bh; +} + int ext4_destroy_inline_data(handle_t *handle, struct inode *inode) { diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 70c8d5f323f0..5c91622cfe01 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1124,16 +1124,21 @@ static int ext4_journalled_write_end(struct file *file, BUG_ON(!ext4_handle_valid(handle)); - if (copied < len) { - if (!PageUptodate(page)) - copied = 0; - page_zero_new_buffers(page, from+copied, to); - } + if (ext4_has_inline_data(inode)) + copied = ext4_write_inline_data_end(inode, pos, len, + copied, page); + else { + if (copied < len) { + if (!PageUptodate(page)) + copied = 0; + page_zero_new_buffers(page, from+copied, to); + } - ret = ext4_walk_page_buffers(handle, page_buffers(page), from, - to, &partial, write_end_fn); - if (!partial) - SetPageUptodate(page); + ret = ext4_walk_page_buffers(handle, page_buffers(page), from, + to, &partial, write_end_fn); + if (!partial) + SetPageUptodate(page); + } new_i_size = pos + copied; if (new_i_size > inode->i_size) i_size_write(inode, pos+copied); @@ -1911,15 +1916,29 @@ static int __ext4_journalled_writepage(struct page *page, { struct address_space *mapping = page->mapping; struct inode *inode = mapping->host; - struct buffer_head *page_bufs; + struct buffer_head *page_bufs = NULL; handle_t *handle = NULL; - int ret = 0; - int err; + int ret = 0, err = 0; + int inline_data = ext4_has_inline_data(inode); + struct buffer_head *inode_bh = NULL; ClearPageChecked(page); - page_bufs = page_buffers(page); - BUG_ON(!page_bufs); - ext4_walk_page_buffers(handle, page_bufs, 0, len, NULL, bget_one); + + if (inline_data) { + BUG_ON(page->index != 0); + BUG_ON(len > ext4_get_max_inline_size(inode)); + inode_bh = ext4_journalled_write_inline_data(inode, len, page); + if (inode_bh == NULL) + goto out; + } else { + page_bufs = page_buffers(page); + if (!page_bufs) { + BUG(); + goto out; + } + ext4_walk_page_buffers(handle, page_bufs, 0, len, + NULL, bget_one); + } /* As soon as we unlock the page, it can go away, but we have * references to buffers so we are safe */ unlock_page(page); @@ -1932,11 +1951,18 @@ static int __ext4_journalled_writepage(struct page *page, BUG_ON(!ext4_handle_valid(handle)); - ret = ext4_walk_page_buffers(handle, page_bufs, 0, len, NULL, - do_journal_get_write_access); + if (inline_data) { + ret = ext4_journal_get_write_access(handle, inode_bh); - err = ext4_walk_page_buffers(handle, page_bufs, 0, len, NULL, - write_end_fn); + err = ext4_handle_dirty_metadata(handle, inode, inode_bh); + + } else { + ret = ext4_walk_page_buffers(handle, page_bufs, 0, len, NULL, + do_journal_get_write_access); + + err = ext4_walk_page_buffers(handle, page_bufs, 0, len, NULL, + write_end_fn); + } if (ret == 0) ret = err; EXT4_I(inode)->i_datasync_tid = handle->h_transaction->t_tid; @@ -1944,9 +1970,12 @@ static int __ext4_journalled_writepage(struct page *page, if (!ret) ret = err; - ext4_walk_page_buffers(handle, page_bufs, 0, len, NULL, bput_one); + if (!ext4_has_inline_data(inode)) + ext4_walk_page_buffers(handle, page_bufs, 0, len, + NULL, bput_one); ext4_set_inode_state(inode, EXT4_STATE_JDATA); out: + brelse(inode_bh); return ret; } diff --git a/fs/ext4/xattr.h b/fs/ext4/xattr.h index db5672206238..7095ac13fbc2 100644 --- a/fs/ext4/xattr.h +++ b/fs/ext4/xattr.h @@ -150,6 +150,10 @@ extern int ext4_write_inline_data_end(struct inode *inode, loff_t pos, unsigned len, unsigned copied, struct page *page); +extern struct buffer_head * +ext4_journalled_write_inline_data(struct inode *inode, + unsigned len, + struct page *page); # else /* CONFIG_EXT4_FS_XATTR */ static inline int @@ -288,6 +292,14 @@ static inline int ext4_write_inline_data_end(struct inode *inode, { return 0; } + +static inline struct buffer_head * +ext4_journalled_write_inline_data(struct inode *inode, + unsigned len, + struct page *page) +{ + return NULL; +} # endif /* CONFIG_EXT4_FS_XATTR */ #ifdef CONFIG_EXT4_FS_SECURITY |
