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Date: Tue, 29 Jul 2014 19:38:21 +0800
From: Chao Yu <chao2.yu@...sung.com>
To: 'Jaegeuk Kim' <jaegeuk@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net
Subject: RE: [f2fs-dev] [PATCH 05/11] f2fs: add info of appended or updated
data writes
> -----Original Message-----
> From: Jaegeuk Kim [mailto:jaegeuk@...nel.org]
> Sent: Saturday, July 26, 2014 6:47 AM
> To: linux-kernel@...r.kernel.org; linux-fsdevel@...r.kernel.org;
> linux-f2fs-devel@...ts.sourceforge.net
> Cc: Jaegeuk Kim
> Subject: [f2fs-dev] [PATCH 05/11] f2fs: add info of appended or updated data writes
>
> This patch introduces a inode number list in which represents inodes having
> appended data writes or updated data writes after last checkpoint.
> This will be used at fsync to determine whether the recovery information
> should be written or not.
>
> Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
Reviewed-by: Chao Yu <chao2.yu@...sung.com>
> ---
> fs/f2fs/checkpoint.c | 39 +++++++++++++++++++++++++++++++++++++++
> fs/f2fs/data.c | 2 ++
> fs/f2fs/f2fs.h | 7 +++++++
> fs/f2fs/inode.c | 4 ++++
> 4 files changed, 52 insertions(+)
>
> diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
> index d35094a..42a16c1 100644
> --- a/fs/f2fs/checkpoint.c
> +++ b/fs/f2fs/checkpoint.c
> @@ -325,6 +325,44 @@ static void __remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int
> type)
> spin_unlock(&sbi->ino_lock[type]);
> }
>
> +void add_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type)
> +{
> + /* add new dirty ino entry into list */
> + __add_ino_entry(sbi, ino, type);
> +}
> +
> +void remove_dirty_inode(struct f2fs_sb_info *sbi, nid_t ino, int type)
> +{
> + /* remove dirty ino entry from list */
> + __remove_ino_entry(sbi, ino, type);
> +}
> +
> +/* mode should be APPEND_INO or UPDATE_INO */
> +bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode)
> +{
> + struct ino_entry *e;
> + spin_lock(&sbi->ino_lock[mode]);
> + e = radix_tree_lookup(&sbi->ino_root[mode], ino);
> + spin_unlock(&sbi->ino_lock[mode]);
> + return e ? true : false;
> +}
> +
> +static void release_dirty_inode(struct f2fs_sb_info *sbi)
> +{
> + struct ino_entry *e, *tmp;
> + int i;
> +
> + for (i = APPEND_INO; i <= UPDATE_INO; i++) {
> + spin_lock(&sbi->ino_lock[i]);
> + list_for_each_entry_safe(e, tmp, &sbi->ino_list[i], list) {
> + list_del(&e->list);
> + radix_tree_delete(&sbi->ino_root[i], e->ino);
> + kmem_cache_free(ino_entry_slab, e);
> + }
> + spin_unlock(&sbi->ino_lock[i]);
> + }
> +}
> +
> int acquire_orphan_inode(struct f2fs_sb_info *sbi)
> {
> int err = 0;
> @@ -896,6 +934,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount)
>
> if (unlikely(!is_set_ckpt_flags(ckpt, CP_ERROR_FLAG))) {
> clear_prefree_segments(sbi);
> + release_dirty_inode(sbi);
> F2FS_RESET_SB_DIRT(sbi);
> }
> }
> diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
> index 482313d..ec3c886 100644
> --- a/fs/f2fs/data.c
> +++ b/fs/f2fs/data.c
> @@ -789,9 +789,11 @@ int do_write_data_page(struct page *page, struct f2fs_io_info *fio)
> !is_cold_data(page) &&
> need_inplace_update(inode))) {
> rewrite_data_page(page, old_blkaddr, fio);
> + set_inode_flag(F2FS_I(inode), FI_UPDATE_WRITE);
> } else {
> write_data_page(page, &dn, &new_blkaddr, fio);
> update_extent_cache(new_blkaddr, &dn);
> + set_inode_flag(F2FS_I(inode), FI_APPEND_WRITE);
> }
> out_writepage:
> f2fs_put_dnode(&dn);
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 4454caa..ab36025 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -103,6 +103,8 @@ enum {
> /* for the list of ino */
> enum {
> ORPHAN_INO, /* for orphan ino list */
> + APPEND_INO, /* for append ino list */
> + UPDATE_INO, /* for update ino list */
> MAX_INO_ENTRY, /* max. list */
> };
>
> @@ -994,6 +996,8 @@ enum {
> FI_NO_EXTENT, /* not to use the extent cache */
> FI_INLINE_XATTR, /* used for inline xattr */
> FI_INLINE_DATA, /* used for inline data*/
> + FI_APPEND_WRITE, /* inode has appended data */
> + FI_UPDATE_WRITE, /* inode has in-place-update data */
> };
>
> static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag)
> @@ -1252,6 +1256,9 @@ struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t);
> struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t);
> int ra_meta_pages(struct f2fs_sb_info *, int, int, int);
> long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long);
> +void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
> +void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type);
> +bool exist_written_data(struct f2fs_sb_info *, nid_t, int);
> int acquire_orphan_inode(struct f2fs_sb_info *);
> void release_orphan_inode(struct f2fs_sb_info *);
> void add_orphan_inode(struct f2fs_sb_info *, nid_t);
> diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
> index cafba3c..0e69aa9 100644
> --- a/fs/f2fs/inode.c
> +++ b/fs/f2fs/inode.c
> @@ -296,6 +296,10 @@ void f2fs_evict_inode(struct inode *inode)
> sb_end_intwrite(inode->i_sb);
> no_delete:
> invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, inode->i_ino);
> + if (is_inode_flag_set(F2FS_I(inode), FI_APPEND_WRITE))
> + add_dirty_inode(sbi, inode->i_ino, APPEND_INO);
> + if (is_inode_flag_set(F2FS_I(inode), FI_UPDATE_WRITE))
> + add_dirty_inode(sbi, inode->i_ino, UPDATE_INO);
> out_clear:
> clear_inode(inode);
> }
> --
> 1.8.5.2 (Apple Git-48)
>
>
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