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Date: Tue, 9 Apr 2013 13:17:09 +0200 (CEST)
From: Lukáš Czerner <lczerner@...hat.com>
To: Zheng Liu <gnehzuil.liu@...il.com>
cc: Lukas Czerner <lczerner@...hat.com>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH v3] ext4: move ext4_ind_migrate() into migrate.c
On Tue, 9 Apr 2013, Zheng Liu wrote:
> Date: Tue, 9 Apr 2013 19:03:55 +0800
> From: Zheng Liu <gnehzuil.liu@...il.com>
> To: Lukas Czerner <lczerner@...hat.com>
> Cc: linux-ext4@...r.kernel.org
> Subject: Re: [PATCH v3] ext4: move ext4_ind_migrate() into migrate.c
>
> On Tue, Apr 09, 2013 at 12:10:56PM +0200, Lukas Czerner wrote:
> > Move ext4_ind_migrate() into migrate.c file since it makes much more
> > sense and ext4_ext_migrate() is there as well.
> >
> > Signed-off-by: Lukas Czerner <lczerner@...hat.com>
>
> The patch looks good to me. But it seems that you forgot to add
> bigalloc check. IIRC, that patch hasn't be applied.
right :), I need to resend those as a series.
Thanks!
-Lukas
>
> Regards,
> - Zheng
>
> > ---
> > fs/ext4/ext4.h | 2 +-
> > fs/ext4/extents.c | 59 ----------------------------------------------------
> > fs/ext4/migrate.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
> > 3 files changed, 60 insertions(+), 61 deletions(-)
> >
> > diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> > index a0637e5..bb56920 100644
> > --- a/fs/ext4/ext4.h
> > +++ b/fs/ext4/ext4.h
> > @@ -2131,6 +2131,7 @@ extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long);
> >
> > /* migrate.c */
> > extern int ext4_ext_migrate(struct inode *);
> > +extern int ext4_ind_migrate(struct inode *inode);
> >
> > /* namei.c */
> > extern int ext4_dirent_csum_verify(struct inode *inode,
> > @@ -2620,7 +2621,6 @@ extern int ext4_find_delalloc_range(struct inode *inode,
> > extern int ext4_find_delalloc_cluster(struct inode *inode, ext4_lblk_t lblk);
> > extern int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
> > __u64 start, __u64 len);
> > -extern int ext4_ind_migrate(struct inode *inode);
> >
> >
> > /* move_extent.c */
> > diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
> > index 6c5a70a..3645357 100644
> > --- a/fs/ext4/extents.c
> > +++ b/fs/ext4/extents.c
> > @@ -4715,62 +4715,3 @@ int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
> >
> > return error;
> > }
> > -
> > -/*
> > - * Migrate a simple extent-based inode to use the i_blocks[] array
> > - */
> > -int ext4_ind_migrate(struct inode *inode)
> > -{
> > - struct ext4_extent_header *eh;
> > - struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
> > - struct ext4_inode_info *ei = EXT4_I(inode);
> > - struct ext4_extent *ex;
> > - unsigned int i, len;
> > - ext4_fsblk_t blk;
> > - handle_t *handle;
> > - int ret;
> > -
> > - if (!EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
> > - EXT4_FEATURE_INCOMPAT_EXTENTS) ||
> > - (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
> > - return -EINVAL;
> > -
> > - down_write(&EXT4_I(inode)->i_data_sem);
> > - ret = ext4_ext_check_inode(inode);
> > - if (ret)
> > - goto errout;
> > -
> > - eh = ext_inode_hdr(inode);
> > - ex = EXT_FIRST_EXTENT(eh);
> > - if (ext4_blocks_count(es) > EXT4_MAX_BLOCK_FILE_PHYS ||
> > - eh->eh_depth != 0 || eh->eh_entries > 1) {
> > - ret = -EOPNOTSUPP;
> > - goto errout;
> > - }
> > - if (eh->eh_entries == 0)
> > - blk = len = 0;
> > - else {
> > - len = le16_to_cpu(ex->ee_len);
> > - blk = ext4_ext_pblock(ex);
> > - if (len > EXT4_NDIR_BLOCKS) {
> > - ret = -EOPNOTSUPP;
> > - goto errout;
> > - }
> > - }
> > -
> > - handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, 1);
> > - if (IS_ERR(handle)) {
> > - ret = PTR_ERR(handle);
> > - goto errout;
> > - }
> > -
> > - ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);
> > - memset(ei->i_data, 0, sizeof(ei->i_data));
> > - for (i=0; i < len; i++)
> > - ei->i_data[i] = cpu_to_le32(blk++);
> > - ext4_mark_inode_dirty(handle, inode);
> > - ext4_journal_stop(handle);
> > -errout:
> > - up_write(&EXT4_I(inode)->i_data_sem);
> > - return ret;
> > -}
> > diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
> > index 480acf4..3464604 100644
> > --- a/fs/ext4/migrate.c
> > +++ b/fs/ext4/migrate.c
> > @@ -426,7 +426,6 @@ static int free_ext_block(handle_t *handle, struct inode *inode)
> > return retval;
> > }
> > return retval;
> > -
> > }
> >
> > int ext4_ext_migrate(struct inode *inode)
> > @@ -606,3 +605,62 @@ out:
> >
> > return retval;
> > }
> > +
> > +/*
> > + * Migrate a simple extent-based inode to use the i_blocks[] array
> > + */
> > +int ext4_ind_migrate(struct inode *inode)
> > +{
> > + struct ext4_extent_header *eh;
> > + struct ext4_super_block *es = EXT4_SB(inode->i_sb)->s_es;
> > + struct ext4_inode_info *ei = EXT4_I(inode);
> > + struct ext4_extent *ex;
> > + unsigned int i, len;
> > + ext4_fsblk_t blk;
> > + handle_t *handle;
> > + int ret;
> > +
> > + if (!EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
> > + EXT4_FEATURE_INCOMPAT_EXTENTS) ||
> > + (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
> > + return -EINVAL;
> > +
> > + down_write(&EXT4_I(inode)->i_data_sem);
> > + ret = ext4_ext_check_inode(inode);
> > + if (ret)
> > + goto errout;
> > +
> > + eh = ext_inode_hdr(inode);
> > + ex = EXT_FIRST_EXTENT(eh);
> > + if (ext4_blocks_count(es) > EXT4_MAX_BLOCK_FILE_PHYS ||
> > + eh->eh_depth != 0 || eh->eh_entries > 1) {
> > + ret = -EOPNOTSUPP;
> > + goto errout;
> > + }
> > + if (eh->eh_entries == 0)
> > + blk = len = 0;
> > + else {
> > + len = le16_to_cpu(ex->ee_len);
> > + blk = ext4_ext_pblock(ex);
> > + if (len > EXT4_NDIR_BLOCKS) {
> > + ret = -EOPNOTSUPP;
> > + goto errout;
> > + }
> > + }
> > +
> > + handle = ext4_journal_start(inode, EXT4_HT_MIGRATE, 1);
> > + if (IS_ERR(handle)) {
> > + ret = PTR_ERR(handle);
> > + goto errout;
> > + }
> > +
> > + ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);
> > + memset(ei->i_data, 0, sizeof(ei->i_data));
> > + for (i = 0; i < len; i++)
> > + ei->i_data[i] = cpu_to_le32(blk++);
> > + ext4_mark_inode_dirty(handle, inode);
> > + ext4_journal_stop(handle);
> > +errout:
> > + up_write(&EXT4_I(inode)->i_data_sem);
> > + return ret;
> > +}
> > --
> > 1.7.7.6
> >
> --
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