diff options
| author | Jan Kara <jack@suse.cz> | 2013-06-04 19:19:34 +0200 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-06-04 19:19:34 +0200 |
| commit | 3613d22807a2616e9346800bacd88aa8bbbefcd7 (patch) | |
| tree | a7e83b6ad87e3f4f9f9d271a1d253d9f9189b541 /fs | |
| parent | ext4: restructure writeback path (diff) | |
| download | linux-3613d22807a2616e9346800bacd88aa8bbbefcd7.tar.xz linux-3613d22807a2616e9346800bacd88aa8bbbefcd7.zip | |
ext4: remove buffer_uninit handling
There isn't any need for setting BH_Uninit on buffers anymore. It was
only used to signal we need to mark io_end as needing extent
conversion in add_bh_to_extent() but now we can mark the io_end
directly when mapping extent.
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/ext4.h | 15 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 4 | ||||
| -rw-r--r-- | fs/ext4/page-io.c | 4 |
3 files changed, 8 insertions, 15 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 90a164f365c4..0a9b729f991b 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2653,20 +2653,17 @@ extern void ext4_mmp_csum_set(struct super_block *sb, struct mmp_struct *mmp); extern int ext4_mmp_csum_verify(struct super_block *sb, struct mmp_struct *mmp); -/* BH_Uninit flag: blocks are allocated but uninitialized on disk */ +/* + * Note that these flags will never ever appear in a buffer_head's state flag. + * See EXT4_MAP_... to see where this is used. + */ enum ext4_state_bits { BH_Uninit /* blocks are allocated but uninitialized on disk */ - = BH_JBDPrivateStart, + = BH_JBDPrivateStart, BH_AllocFromCluster, /* allocated blocks were part of already - * allocated cluster. Note that this flag will - * never, ever appear in a buffer_head's state - * flag. See EXT4_MAP_FROM_CLUSTER to see where - * this is used. */ + * allocated cluster. */ }; -BUFFER_FNS(Uninit, uninit) -TAS_BUFFER_FNS(Uninit, uninit) - /* * Add new method to test whether block and inode bitmaps are properly * initialized. With uninit_bg reading the block from disk is not enough diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 5939a4742def..736d164dc2ba 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2047,8 +2047,6 @@ static int mpage_map_and_submit_buffers(struct mpage_da_data *mpd) clear_buffer_delay(bh); bh->b_blocknr = pblock++; } - if (mpd->map.m_flags & EXT4_MAP_UNINIT) - set_buffer_uninit(bh); clear_buffer_unwritten(bh); } while (++lblk < blocks && (bh = bh->b_this_page) != head); @@ -2110,6 +2108,8 @@ static int mpage_map_one_extent(handle_t *handle, struct mpage_da_data *mpd) err = ext4_map_blocks(handle, inode, map, get_blocks_flags); if (err < 0) return err; + if (map->m_flags & EXT4_MAP_UNINIT) + ext4_set_io_unwritten_flag(inode, mpd->io_submit.io_end); BUG_ON(map->m_len == 0); if (map->m_flags & EXT4_MAP_NEW) { diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 3e5854625126..de6860c7836e 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -369,7 +369,6 @@ static int io_submit_add_bh(struct ext4_io_submit *io, struct inode *inode, struct buffer_head *bh) { - ext4_io_end_t *io_end; int ret; if (io->io_bio && bh->b_blocknr != io->io_next_block) { @@ -384,9 +383,6 @@ submit_and_retry: ret = bio_add_page(io->io_bio, bh->b_page, bh->b_size, bh_offset(bh)); if (ret != bh->b_size) goto submit_and_retry; - io_end = io->io_end; - if (test_clear_buffer_uninit(bh)) - ext4_set_io_unwritten_flag(inode, io_end); io->io_next_block++; return 0; } |