tree 9ab550efae0c4ddac55cdf3fffd4ccf6c6c0dc7a
parent ebf00be37de35788cad72f4f20b4a39e30c0be4a
author Andreas Gruenbacher <agruenba@redhat.com> 1529446256 -0700
committer Darrick J. Wong <darrick.wong@oracle.com> 1529446256 -0700

iomap: generic inline data handling

Add generic inline data handling by adding a pointer to the inline data
region to struct iomap.  When handling a buffered IOMAP_INLINE write,
iomap_write_begin will copy the current inline data from the inline data
region into the page cache, and iomap_write_end will copy the changes in
the page cache back to the inline data region.

This doesn't cover inline data reads and direct I/O yet because so far,
we have no users.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
[hch: small cleanups to better fit in with other iomap work]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>