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54cb8821de
android_kernel_xiaomi_sm8350/fs/xfs
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Nick Piggin 54cb8821de mm: merge populate and nopage into fault (fixes nonlinear) 
Nonlinear mappings are (AFAIKS) simply a virtual memory concept that encodes
the virtual address -> file offset differently from linear mappings.

->populate is a layering violation because the filesystem/pagecache code
should need to know anything about the virtual memory mapping.  The hitch here
is that the ->nopage handler didn't pass down enough information (ie.  pgoff).
 But it is more logical to pass pgoff rather than have the ->nopage function
calculate it itself anyway (because that's a similar layering violation).

Having the populate handler install the pte itself is likewise a nasty thing
to be doing.

This patch introduces a new fault handler that replaces ->nopage and
->populate and (later) ->nopfn.  Most of the old mechanism is still in place
so there is a lot of duplication and nice cleanups that can be removed if
everyone switches over.

The rationale for doing this in the first place is that nonlinear mappings are
subject to the pagefault vs invalidate/truncate race too, and it seemed stupid
to duplicate the synchronisation logic rather than just consolidate the two.

After this patch, MAP_NONBLOCK no longer sets up ptes for pages present in
pagecache.  Seems like a fringe functionality anyway.

NOPAGE_REFAULT is removed.  This should be implemented with ->fault, and no
users have hit mainline yet.

[akpm@linux-foundation.org: cleanup]
[randy.dunlap@oracle.com: doc. fixes for readahead]
[akpm@linux-foundation.org: build fix]
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:41 -07:00
..
linux-2.6 mm: merge populate and nopage into fault (fixes nonlinear) 2007-07-19 10:04:41 -07:00
quota mm: clean up and kernelify shrinker registration 2007-07-17 10:23:00 -07:00
support [XFS] reducing the number of random number functions. 2007-05-08 13:49:03 +10:00
Kbuild
Kconfig
Makefile
Makefile-linux-2.6 [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_acl.c [XFS] Remove unused header files for MAC and CAP checking functionality. 2007-02-10 18:37:28 +11:00
xfs_acl.h
xfs_ag.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_alloc_btree.c [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_alloc_btree.h [XFS] Remove unused arguments from the XFS_BTREE_*_ADDR macros. 2007-02-10 18:37:33 +11:00
xfs_alloc.c [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_alloc.h [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_arch.h
xfs_attr_leaf.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_attr_leaf.h
xfs_attr_sf.h
xfs_attr.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_attr.h
xfs_behavior.c
xfs_behavior.h
xfs_bit.c [XFS] Kill off xfs_count_bits 2007-07-14 15:36:43 +10:00
xfs_bit.h [XFS] Kill off xfs_count_bits 2007-07-14 15:36:43 +10:00
xfs_bmap_btree.c [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_bmap_btree.h [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_bmap.c [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_bmap.h [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_btree.c
xfs_btree.h [XFS] Simplify XFS min/max macros. 2007-07-14 15:36:53 +10:00
xfs_buf_item.c [XFS] Kill off xfs_count_bits 2007-07-14 15:36:43 +10:00
xfs_buf_item.h [XFS] Get rid of old 5.3/6.1 v1 log items. Cleanup patch sent in by Eric 2007-02-10 18:35:02 +11:00
xfs_clnt.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_da_btree.c [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_da_btree.h [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_dfrag.c [XFS] propogate return codes from flush routines 2007-05-08 13:49:27 +10:00
xfs_dfrag.h
xfs_dinode.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_dir2_block.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_block.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_data.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_data.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_leaf.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_leaf.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_node.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_node.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_sf.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_sf.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_trace.c
xfs_dir2_trace.h
xfs_dir2.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2.h
xfs_dmapi.h
xfs_dmops.c
xfs_error.c [XFS] reducing the number of random number functions. 2007-05-08 13:49:03 +10:00
xfs_error.h [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_extfree_item.c [XFS] Keep stack usage down for 4k stacks by using noinline. 2007-02-10 18:34:56 +11:00
xfs_extfree_item.h
xfs_filestream.c [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_filestream.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_fs.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_fsops.c [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_fsops.h
xfs_ialloc_btree.c
xfs_ialloc_btree.h [XFS] Remove unused arguments from the XFS_BTREE_*_ADDR macros. 2007-02-10 18:37:33 +11:00
xfs_ialloc.c [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_ialloc.h [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_iget.c [XFS] Add lockdep support for XFS 2007-05-08 13:50:19 +10:00
xfs_imap.h
xfs_inode_item.c [XFS] Keep stack usage down for 4k stacks by using noinline. 2007-02-10 18:34:56 +11:00
xfs_inode_item.h
xfs_inode.c [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_inode.h [XFS] Fix lockdep annotations for xfs_lock_inodes 2007-07-14 18:09:42 +10:00
xfs_inum.h
xfs_iocore.c [XFS] Fix to prevent the notorious 'NULL files' problem after a crash. 2007-05-08 13:49:46 +10:00
xfs_iomap.c [XFS] Cleanup inode extent size hint extraction 2007-07-14 15:35:36 +10:00
xfs_iomap.h [XFS] Fix to prevent the notorious 'NULL files' problem after a crash. 2007-05-08 13:49:46 +10:00
xfs_itable.c [XFS] Fix XFS_IOC_FSBULKSTAT{,_SINGLE} & XFS_IOC_FSINUMBERS in compat mode 2007-07-14 15:42:50 +10:00
xfs_itable.h [XFS] Fix XFS_IOC_FSBULKSTAT{,_SINGLE} & XFS_IOC_FSINUMBERS in compat mode 2007-07-14 15:42:50 +10:00
xfs_log_priv.h
xfs_log_recover.c [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_log_recover.h
xfs_log.c [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_log.h
xfs_mount.c [XFS] Use do_div() on 64 bit types. 2007-07-14 15:36:08 +10:00
xfs_mount.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_mru_cache.c [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_mru_cache.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_qmops.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_quota.h [XFS] Fix uquota and oquota enforcement problems. 2007-05-08 13:49:33 +10:00
xfs_refcache.h
xfs_rename.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_rtalloc.c [XFS] Don't grow filesystems past the size they can index. 2007-07-14 15:21:29 +10:00
xfs_rtalloc.h [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_rw.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_rw.h [XFS] Cleanup inode extent size hint extraction 2007-07-14 15:35:36 +10:00
xfs_sb.h [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_trans_ail.c [XFS] Workaround log space issue by increasing XFS_TRANS_PUSH_AIL_RESTARTS 2007-02-10 18:35:52 +11:00
xfs_trans_buf.c
xfs_trans_extfree.c
xfs_trans_inode.c
xfs_trans_item.c
xfs_trans_priv.h
xfs_trans_space.h
xfs_trans.c [XFS] Apply transaction delta counts atomically to incore counters 2007-07-14 15:32:09 +10:00
xfs_trans.h [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_types.h
xfs_utils.c [XFS] propogate return codes from flush routines 2007-05-08 13:49:27 +10:00
xfs_utils.h
xfs_vfsops.c [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_vnodeops.c [XFS] Fix lockdep annotations for xfs_lock_inodes 2007-07-14 18:09:42 +10:00
xfs.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00