On Tue, Dec 03, 2013 at 07:11:25PM -0800, Darrick J. Wong wrote:
> On Tue, Dec 03, 2013 at 08:11:42PM +0800, Zheng Liu wrote:
> > From: Zheng Liu <wenqing.lz@xxxxxxxxxx>
> >
> > No physical block mapping if an inode has inline data.
> >
> > Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
> > Signed-off-by: Zheng Liu <wenqing.lz@xxxxxxxxxx>
> > ---
> > lib/ext2fs/bmap.c | 7 +++++++
> > 1 file changed, 7 insertions(+)
> >
> > diff --git a/lib/ext2fs/bmap.c b/lib/ext2fs/bmap.c
> > index 5074587..0d043bd 100644
> > --- a/lib/ext2fs/bmap.c
> > +++ b/lib/ext2fs/bmap.c
> > @@ -273,6 +273,13 @@ errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, struct ext2_inode *inode,
> > block_buf = buf;
> > }
> >
> > + /*
> > + * If an inode has inline data, that means that it doesn't have
> > + * any blocks and we shouldn't map any blocks for it.
> > + */
> > + if (inode->i_flags & EXT4_INLINE_DATA_FL)
> > + goto done;
>
> If you move this to before the ext2fs_get_array() chunk above it, you could
> return straight out of the function.
Good catch!
>
> This should return an error code of some kind, because otherwise the client
> will think that something happened when the function returns 0, especially if
> BMAP_{ALLOC,SET,UNINIT} are passed in.
Fair enough
- Zheng
>
> --D
>
> > +
> > if (inode->i_flags & EXT4_EXTENTS_FL) {
> > retval = ext2fs_extent_open2(fs, ino, inode, &handle);
> > if (retval)
> > --
> > 1.7.9.7
> >
> > --
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