CEPH-Devel Archive on lore.kernel.org
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* vm_fault_t conversion, for real
@ 2018-05-16  5:43 Christoph Hellwig
  2018-05-16  5:43 ` [PATCH 01/14] orangefs: don't return errno values from ->fault Christoph Hellwig
                   ` (14 more replies)
  0 siblings, 15 replies; 28+ messages in thread
From: Christoph Hellwig @ 2018-05-16  5:43 UTC (permalink / raw)
  To: Souptick Joarder, Matthew Wilcox
  Cc: linux-fsdevel, linux-mm, linux-kernel, devel, ceph-devel,
	linux-btrfs, linux-ext4, ocfs2-devel, linux-mtd, dri-devel,
	lustre-devel, linux-arm-kernel, linux-s390

Hi all,

this series tries to actually turn vm_fault_t into a type that can be
typechecked and checks the fallout instead of sprinkling random
annotations without context.

The first one fixes a real bug in orangefs, the second and third fix
mismatched existing vm_fault_t annotations on the same function, the
fourth removes an unused export that was in the chain.  The remainder
until the last one do some not quite trivial conversions, and the last
one does the trivial mass annotation and flips vm_fault_t to a __bitwise
unsigned int - the unsigned means we also get plain compiler type
checking for the new ->fault signature even without sparse.

This has survived an x86 allyesconfig build, and got a SUCCESS from the
buildbot that I don't really trust - I'm pretty sure there are bits
and pieces hiding in other architectures that it hasn't caught up to.

The sparse annotations are manuall verified for the core MM code and
a few other interesting bits (e.g. DAX and the x86 fault code)

The series is against linux-next as of 2018/05/15 to make sure any
annotations in subsystem trees are picked up.

^ permalink raw reply	[flat|nested] 28+ messages in thread

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Thread overview: 28+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-05-16  5:43 vm_fault_t conversion, for real Christoph Hellwig
2018-05-16  5:43 ` [PATCH 01/14] orangefs: don't return errno values from ->fault Christoph Hellwig
2018-05-16 11:18   ` Matthew Wilcox
2018-05-16  5:43 ` [PATCH 02/14] fs: make the filemap_page_mkwrite prototype consistent Christoph Hellwig
2018-05-16  5:43 ` [PATCH 03/14] dax: make the dax_iomap_fault " Christoph Hellwig
2018-05-16  5:43 ` [PATCH 04/14] mm: remove the unused device_private_entry_fault export Christoph Hellwig
2018-05-16  5:43 ` [PATCH 05/14] ceph: untangle ceph_filemap_fault Christoph Hellwig
2018-05-16  5:43 ` [PATCH 06/14] btrfs: separate errno from VM_FAULT_* values Christoph Hellwig
     [not found]   ` <20180516054348.15950-7-hch-jcswGhMUV9g@public.gmane.org>
2018-05-16 11:13     ` David Sterba
2018-05-16  5:43 ` [PATCH 07/14] ext4: " Christoph Hellwig
2018-05-16  5:43 ` [PATCH 08/14] ocfs2: " Christoph Hellwig
2018-05-16  5:43 ` [PATCH 09/14] ubifs: " Christoph Hellwig
2018-05-16  5:43 ` [PATCH 10/14] vgem: " Christoph Hellwig
2018-05-16  9:53   ` Daniel Vetter
2018-05-16 13:01     ` Christoph Hellwig
2018-05-16 13:13       ` Matthew Wilcox
2018-05-16  5:43 ` [PATCH 11/14] ttm: " Christoph Hellwig
2018-05-16  5:43 ` [PATCH 12/14] lustre: " Christoph Hellwig
2018-05-16  5:43 ` [PATCH 13/14] mm: move arch specific VM_FAULT_* flags to mm.h Christoph Hellwig
2018-05-16  5:43 ` [PATCH 14/14] mm: turn on vm_fault_t type checking Christoph Hellwig
2018-05-16 11:28   ` Matthew Wilcox
2018-05-16 13:03     ` Christoph Hellwig
2018-05-16 15:08   ` Darrick J. Wong
2018-05-16 17:34     ` Christoph Hellwig
2018-05-16 11:23 ` vm_fault_t conversion, for real Matthew Wilcox
2018-05-16 13:03   ` Christoph Hellwig
2018-05-16 13:22     ` Matthew Wilcox
2018-05-16 17:32       ` Christoph Hellwig

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