When unmount failed, for instance because the mount is still busy,
UFS1 extended attributes structures were left freed while the kernel
assumes extended attributes were still enabled. This led to using
UFS1 extended attributes structures after free. With LOCKDEBUG, with
quickly triggers a panic.
The problem is fixed by:
1) clear MNT_EXTATTR flag after extended attributes structures are freed
2) attempt to restart extended attributes after failed unmount
2) set MNT_EXTATTR correctly after extended attributes restart
As a side effect, extended attribute structures are now only initialized
when extended attributes are started for the filesystem.
- Take the vnode attributes from the NAME attribute.
- Remove now unused ntfs_times() and ntfs_filesize().
- Treat nodes without an unnamed DATA attribute as zero-sized regular files.
- Fix ntfs_loadntnode() to always read full cluster to prevent buffer
cache inconsistency.
- Change ntfs_vgetex() and ntfs_fget() to take a const attrname and
always pass a possibly empty string.
- Change printf to dprintf.
- Get rid of dead fields i_next, i_prev of struct ntnode.
to gcc-4.8 for discovering the bug and to Atari for having a LABELOFFSET of
516 > 512 :-)
XXX: Perhaps we should put all those constants in <sys/bootblock.h> instead
of spreading them around.
dated 2009-11-30, but was not added to src/doc/BUILDING.mdoc,
so the changes were lost.
The original log message was:
- - - -
revision 1.90
date: 2009-11-30 16:13:22 +0000; author: uebayasi; state: Exp; lines: +22 -0;
Support "extsrc", externally added programs and libraries. Users can write
their own reach-overs, cross-build, install, and get set files just like base
and X11 / X.org. (These sets are not included as TNF releases.)
- - - -
- provide a setmode callback for genfb
- add a pmf shutdown handler to switch genfb into polling mode
- no need to call drm_fb_helper_set_config after genfb attaches,
as the setmode callback is called by genfb_attach
This change just brings UFS1 extended attribute *support* in the kernel,
extended attributes are not enabled unless three conditions are met:
1) filesystem is UFS1 (newfs -O1)
2) .attribute/system and .attribute/user directories are created at fs root
3) filesystem is mounted with -o extattr
Some GENERIC kernels are obviously memory constrained, the extended
attributes options were not enabled for them, but just added commented out.
(kernel were considered memory constrained if QUOTA option was disabled)
