Christoph Hellwig 1e431f5ce7 cleanup blockdev_direct_IO locking ... Currently the locking in blockdev_direct_IO is a mess, we have three different locking types and very confusing checks for some of them. The most complicated one is DIO_OWN_LOCKING for reads, which happens to not actually be used. This patch gets rid of the DIO_OWN_LOCKING - as mentioned above the read case is unused anyway, and the write side is almost identical to DIO_NO_LOCKING. The difference is that DIO_NO_LOCKING always sets the create argument for the get_blocks callback to zero, but we can easily move that to the actual get_blocks callbacks. There are four users of the DIO_NO_LOCKING mode: gfs already ignores the create argument and thus is fine with the new version, ocfs2 only errors out if create were ever set, and we can remove this dead code now, the block device code only ever uses create for an error message if we are fully beyond the device which can never happen, and last but not least XFS will need the new behavour for writes. Now we can replace the lock_type variable with a flags one, where no flag means the DIO_NO_LOCKING behaviour and DIO_LOCKING is kept as the first flag. Separate out the check for not allowing to fill holes into a separate flag, although for now both flags always get set at the same time. Also revamp the documentation of the locking scheme to actually make sense. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>		2009-12-16 12:16:49 -05:00
..
linux-2.6	cleanup blockdev_direct_IO locking	2009-12-16 12:16:49 -05:00
quota	xfs: event tracing support	2009-12-14 23:08:16 -06:00
support	xfs: event tracing support	2009-12-14 23:08:16 -06:00
Kconfig	xfs: use generic Posix ACL code	2009-06-10 17:07:47 +02:00
Makefile	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_acl.h	sanitize xattr handler prototypes	2009-12-16 12:16:49 -05:00
xfs_ag.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_alloc.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_alloc.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_alloc_btree.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_alloc_btree.h	[XFS] Always use struct xfs_btree_block instead of short / longform	2008-10-30 17:14:34 +11:00
xfs_arch.h	xfs: use generic Posix ACL code	2009-06-10 17:07:47 +02:00
xfs_attr.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_attr.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_attr_leaf.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_attr_leaf.h	[XFS] Remove macro-to-function indirections in attr code	2009-01-09 15:46:44 +11:00
xfs_attr_sf.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_bit.c	[XFS] Use the generic bitops rather than implementing them ourselves.	2008-08-13 15:41:12 +10:00
xfs_bit.h	[XFS] Remove macro-to-function indirections in the mask code	2009-01-09 15:53:54 +11:00
xfs_bmap.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_bmap.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_bmap_btree.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_bmap_btree.h	xfs: add more statics & drop some unused functions	2009-08-31 14:46:20 -05:00
xfs_btree.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_btree.h	xfs: add more statics & drop some unused functions	2009-08-31 14:46:20 -05:00
xfs_btree_trace.c	[XFS] make btree tracing generic	2008-10-30 16:58:50 +11:00
xfs_btree_trace.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_buf_item.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_buf_item.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_da_btree.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_da_btree.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_dfrag.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_dfrag.h	[XFS] Move copy_from_user calls out of ioctl helpers into ioctl switch.	2008-12-02 17:08:01 +11:00
xfs_dinode.h	xfs: remove m_litino	2009-03-29 09:51:14 +02:00
xfs_dir2.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_dir2.h	[XFS] Return case-insensitive match for dentry cache	2008-07-28 16:58:40 +10:00
xfs_dir2_block.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_dir2_block.h
xfs_dir2_data.c	[XFS] Name operation vector for hash and compare	2008-07-28 16:58:36 +10:00
xfs_dir2_data.h	xfs: fix various typos	2009-03-29 09:55:42 +02:00
xfs_dir2_leaf.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_dir2_leaf.h
xfs_dir2_node.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_dir2_node.h
xfs_dir2_sf.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_dir2_sf.h	[XFS] kill xfs_dinode_core_t	2008-12-01 11:37:35 +11:00
xfs_dmapi.h	removed unused #include <linux/version.h>'s	2008-08-23 12:14:12 -07:00
xfs_dmops.c	[XFS] kill struct xfs_mount_args	2008-10-30 17:53:24 +11:00
xfs_error.c	[XFS] avoid memory allocations in xfs_fs_vcmn_err	2008-12-22 18:02:01 +11:00
xfs_error.h	[XFS] avoid memory allocations in xfs_fs_vcmn_err	2008-12-22 18:02:01 +11:00
xfs_extfree_item.c	[XFS] Finish removing the mount pointer from the AIL API	2008-10-30 17:39:58 +11:00
xfs_extfree_item.h	[XFS] remove always-true #ifndef HAVE_FORMAT32 tests	2009-01-22 14:07:31 +11:00
xfs_filestream.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_filestream.h	xfs: kill the STATIC_INLINE macro	2009-12-11 15:11:22 -06:00
xfs_fs.h	trivial: fix typo "for for" in multiple files	2009-09-21 15:14:54 +02:00
xfs_fsops.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_fsops.h	filesystem freeze: add error handling of write_super_lockfs/unlockfs	2009-01-09 16:54:42 -08:00
xfs_ialloc.c	xfs: kill the STATIC_INLINE macro	2009-12-11 15:11:22 -06:00
xfs_ialloc.h	xfs: rationalize xfs_inobt_lookup*	2009-09-01 12:45:39 -05:00
xfs_ialloc_btree.c	xfs: fix various typos	2009-03-29 09:55:42 +02:00
xfs_ialloc_btree.h	xfs: remove superflous inobt macros	2009-02-09 08:37:14 +01:00
xfs_iget.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_inode.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_inode.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_inode_item.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_inode_item.h	xfs: simplify xfs_trans_iget	2009-09-01 12:46:16 -05:00
xfs_inum.h	xfs: remove XFS_INO64_OFFSET	2009-08-31 14:46:22 -05:00
xfs_iomap.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_iomap.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_itable.c	xfs: implement ->dirty_inode to fix timestamp handling	2009-10-08 12:00:03 -05:00
xfs_itable.h	xfs: add more statics & drop some unused functions	2009-08-31 14:46:20 -05:00
xfs_log.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_log.h	xfs: cleanup log unmount handling	2009-03-16 08:19:29 +01:00
xfs_log_priv.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_log_recover.c	Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs	2009-12-15 09:12:43 -08:00
xfs_log_recover.h
xfs_mount.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_mount.h	xfs: cleanup dmapi macros in the umount path	2009-12-11 15:11:23 -06:00
xfs_mru_cache.c	xfs: add more statics & drop some unused functions	2009-08-31 14:46:20 -05:00
xfs_mru_cache.h	xfs: add more statics & drop some unused functions	2009-08-31 14:46:20 -05:00
xfs_quota.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_refcache.h
xfs_rename.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_rtalloc.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_rtalloc.h	xfs: fix various typos	2009-03-29 09:55:42 +02:00
xfs_rw.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_rw.h	xfs: uninline xfs_get_extsz_hint	2009-12-11 15:11:22 -06:00
xfs_sb.h	[XFS] Remove the rest of the macro-to-function indirections.	2009-01-19 14:45:55 +11:00
xfs_trans.c	xfs: I/O completion handlers must use NOFS allocations	2009-12-11 15:11:20 -06:00
xfs_trans.h	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_trans_ail.c	xfs: copy li_lsn before dropping AIL lock	2009-11-17 10:26:49 -06:00
xfs_trans_buf.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_trans_extfree.c
xfs_trans_inode.c	xfs: simplify xfs_trans_iget	2009-09-01 12:46:16 -05:00
xfs_trans_item.c	xfs: fix various typos	2009-03-29 09:55:42 +02:00
xfs_trans_priv.h	[XFS] Finish removing the mount pointer from the AIL API	2008-10-30 17:39:58 +11:00
xfs_trans_space.h	xfs: remove superflous inobt macros	2009-02-09 08:37:14 +01:00
xfs_types.h	xfs: remove uchar_t/ushort_t/uint_t/ulong_t types	2009-02-09 08:37:39 +01:00
xfs_utils.c	xfs: kill xfs_qmops	2009-06-08 15:33:32 +02:00
xfs_utils.h	[XFS] implement IHOLD/IRELE directly	2008-08-13 16:13:45 +10:00
xfs_vnodeops.c	xfs: event tracing support	2009-12-14 23:08:16 -06:00
xfs_vnodeops.h	xfs: simplify inode teardown	2009-12-11 15:11:19 -06:00