Zach Brown 807ae11ee9 Protect per-inode extent items with extent_sem ...

Now that we have full precision extents a writer with i_mutex and a page
lock can be modifying large extent items which cover much of the
surrounding pages in the file.  Readers can be in a different page with
only the page lock and try to work with extent items as the writer is
deleting and creating them.

We add a per-inode rwsem which just protects file extent item
manipulation.  We try to acquire it as close to the item use as possible
in data.c which is the only place we work with file extent items.

This stops rare read corruption we were seeing where get_block in a
reader was racing with extent item deletion in a stager at a further
offset in the file.

Signed-off-by: Zach Brown <zab@versity.com>

2020-12-15 11:56:50 -08:00

..

src

Protect per-inode extent items with extent_sem

2020-12-15 11:56:50 -08:00

.gitignore

scoutfs: update rpm building infrastructure

2018-09-14 15:07:10 -07:00

Makefile

Fix kmod spec path in dist tarball

2020-12-07 10:39:20 -08:00

scoutfs-kmod.spec.in

scoutfs: update rpm building infrastructure

2018-09-14 15:07:10 -07:00