src/sys/gnu, branch release/9.3.0

MFC: r241374

2013-08-10T00:00:19Z

Add an unified macro to deny ability from the compiler to reorder instruction loads/stores at its will. The macro __compiler_membar() is currently supported for both gcc and clang, but kernel compilation will fail otherwise. Reviewed by: bde, kib Discussed with: dim, theraven

MFC r227293 (by ed):

2013-04-05T08:22:11Z

Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs. This means that their use is restricted to a single C file.

MFC: r227309 (partial)

2013-03-09T02:36:32Z

Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs. The SYSCTL_NODE macro defines a list that stores all child-elements of that node. If there's no SYSCTL_DECL macro anywhere else, there's no reason why it shouldn't be static.

MFC r239959:

2012-09-07T17:58:36Z

Work around several warnings from clang in the xfs filesystem, when linking it statically into the kernel. With our gcc in base there are no warnings, so also remove the WERROR= from the module makefile. Noted by: Eir Nym MFC r240011: Partially revert r239959, after actually fixing most of the clang warnings in sys/gnu/fs/xfs. The only warnings that still need to be suppressed are those about array bound overruns of flexible array members in xfs_dir2_{block,sf}.c, which are too expensive (in terms of cascading code changes) to fix.

MFC r238980:

2012-09-02T03:36:57Z

Just like the other file systems found in /sys/fs, g_vfs_open() should be paried with g_vfs_close(). Though g_vfs_close() is a wrapper around g_wither_geom_close(), r206130 added the following test in g_vfs_open(): if (bo->bo_private != vp) return (EBUSY); Which will cause a 'Device busy' error inside reiserfs_mountfs() if the same file system is re-mounted again after umount or mounting failure: (case 1, /dev/ad4s3 is not a valid REISERFS partition) # mount -t reiserfs -o ro /dev/ad4s3 /mnt mount: /dev/ad4s3: Invalid argument # mount -t msdosfs -o ro /dev/ad4s3 /mnt mount: /dev/ad4s3: Device busy (case 2, /dev/ad4s3 is a valid REISERFS partition) # mount -t reiserfs -o ro /dev/ad4s3 /mnt # umount /mnt # mount -t reiserfs -o ro /dev/ad4s3 /mnt mount: /dev/ad4s3: Device busy On the other hand, g_vfs_close() 'fixed' the above cases by doing an extra step to keep 'sc->sc_bo->bo_private' and 'cp->private' pointers synchronised. Reviewed by: kib

MFC r233575:

2012-04-30T15:46:41Z

Make ReiserFS MPSAFE Most functions seemed to be already fine w.r.t. what's done in msdosfs.

MFC: r230897

2012-02-05T20:09:50Z

Use new OSS-based BSD-licensed header for cs sound driver. The cs driver requires a table with firmware values. An alternative firmware is available in a similar Open Sound System driver. This is actually a partial revert of Revision 77504. The csa driver is now free of the GPL. Tested by: joel Approved by: jhb (mentor)

MFC: r230401, r230898

2012-02-04T17:13:34Z

Replace GPLd headers from the Maestro3 driver with BSD licensed versions derived from /usr/ports/audio/oss. The particular headers used were taken from the attic/drv/oss_allegro directory and are mostly identical to the previous files. The Maestro3 driver is now free from the GPL. NOTE: due to lack of testers this driver is being considered for deprecation and removal, however the MFC still makes sense instead of distribution a GPL'd firmware without source code. PR: kern/153920 Approved by: jhb (mentor)

MFC: r229981, r230898

2012-02-03T22:39:04Z

Replace a GPL'd header in the emu10kx snd driver code. This uses the emuxkireg.h already used in the emu10k1 snd driver. Special thanks go to Alexander Motin as he was able to find some errors and reverse engineer some wrong values in the emuxkireg header. While here also merge some cleanups to the module Makefile. PR: 153901 Obtained from: NetBSD Approved by: core (mentor implicit)

MFC r230249:

2012-01-29T08:03:45Z

Make sure all intermediate variables holding mount flags (mnt_flag) and that all internal kernel calls passing mount flags are declared as uint64_t so that flags in the top 32-bits are not lost. MFC r230250: There are several bugs/hangs when trying to take a snapshot on a UFS/FFS filesystem running with journaled soft updates. Until these problems have been tracked down, return ENOTSUPP when an attempt is made to take a snapshot on a filesystem running with journaled soft updates.