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Unionfs: support lower filesystems without writeback capability
authorErez Zadok <ezk@cs.sunysb.edu>
Tue, 16 Oct 2007 14:50:16 +0000 (10:50 -0400)
committerErez Zadok <ezk@cs.sunysb.edu>
Sun, 24 Nov 2013 17:21:44 +0000 (12:21 -0500)
commit6b40da967bafaa039d9c8827fb5f0589233c87bf
tree12056b2e84867054651eca2a79df8e10d8310338tree | snapshot
parent06aaa79676bb81a2880a0b46cc49bf152b9412ebcommit | diff
Unionfs: support lower filesystems without writeback capability

Implement unionfs_writepages.  As per
mm/filemap.c:__filemap_fdatawrite_range(), don't call our writepage if the
lower mapping has BDI_CAP_NO_WRITEBACK capability set.

Signed-off-by: Pekka J Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
fs/unionfs/mmap.c diff | blob | history
fs/unionfs/union.h diff | blob | history
unionfs2-3.7.y