1. 17 2月, 2015 27 次提交
    • J
      ocfs2: add orphan recovery types in ocfs2_recover_orphans · ed460cff
      Joseph Qi 提交于
      Define two orphan recovery types, which indicates if need truncate file or
      not.
      Signed-off-by: NJoseph Qi <joseph.qi@huawei.com>
      Cc: Weiwei Wang <wangww631@huawei.com>
      Cc: Junxiao Bi <junxiao.bi@oracle.com>
      Cc: Joel Becker <jlbec@evilplan.org>
      Cc: Mark Fasheh <mfasheh@suse.com>
      Cc: Xuejiufei <xuejiufei@huawei.com>
      Cc: alex chen <alex.chen@huawei.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      ed460cff
    • J
      ocfs2: add functions to add and remove inode in orphan dir · 06ee5c75
      Joseph Qi 提交于
      Add functions to add inode to orphan dir and remove inode in orphan dir.
      Here we do not call ocfs2_prepare_orphan_dir and ocfs2_orphan_add
      directly.  Because append O_DIRECT will add inode to orphan two and may
      result in more than one orphan entry for the same inode.
      
      [akpm@linux-foundation.org: avoid dynamic stack allocation]
      Signed-off-by: NJoseph Qi <joseph.qi@huawei.com>
      Cc: Weiwei Wang <wangww631@huawei.com>
      Cc: Junxiao Bi <junxiao.bi@oracle.com>
      Cc: Joel Becker <jlbec@evilplan.org>
      Cc: Mark Fasheh <mfasheh@suse.com>
      Cc: Xuejiufei <xuejiufei@huawei.com>
      Cc: alex chen <alex.chen@huawei.com>
      Cc: Fengguang Wu <fengguang.wu@gmail.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      06ee5c75
    • J
      ocfs2: prepare some interfaces used in append direct io · 026749a8
      Joseph Qi 提交于
      Currently in case of append O_DIRECT write (block not allocated yet),
      ocfs2 will fall back to buffered I/O.  This has some disadvantages.
      Firstly, it is not the behavior as expected.  Secondly, it will consume
      huge page cache, e.g.  in mass backup scenario.  Thirdly, modern
      filesystems such as ext4 support this feature.
      
      In this patch set, the direct I/O write doesn't fallback to buffer I/O
      write any more because the allocate blocks are enabled in direct I/O now.
      
      This patch (of 9):
      
      Prepare some interfaces which will be used in append O_DIRECT write.
      Signed-off-by: NJoseph Qi <joseph.qi@huawei.com>
      Cc: Weiwei Wang <wangww631@huawei.com>
      Cc: Mark Fasheh <mfasheh@suse.com>
      Cc: Joel Becker <jlbec@evilplan.org>
      Cc: Xuejiufei <xuejiufei@huawei.com>
      Cc: Junxiao Bi <junxiao.bi@oracle.com>
      Cc: alex chen <alex.chen@huawei.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      026749a8
    • A
    • M
      dax: does not work correctly with virtual aliasing caches · d92576f1
      Matthew Wilcox 提交于
      The DAX code accesses the underlying storage through the kernel's linear
      mapping, which may not be cache-coherent with user mappings on ARM, MIPS
      or SPARC.  Temporarily disable the DAX code until this problem is
      resolved.
      
      The original XIP code also had this problem, but it was never noticed.
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d92576f1
    • M
      brd: rename XIP to DAX · a7a97fc9
      Matthew Wilcox 提交于
      Since this is relating to FS_XIP, not KERNEL_XIP, it should be called
      DAX instead of XIP.
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      a7a97fc9
    • R
      ext4: add DAX functionality · 923ae0ff
      Ross Zwisler 提交于
      This is a port of the DAX functionality found in the current version of
      ext2.
      
      [matthew.r.wilcox@intel.com: heavily tweaked]
      [akpm@linux-foundation.org: remap_pages went away]
      Signed-off-by: NRoss Zwisler <ross.zwisler@linux.intel.com>
      Reviewed-by: NAndreas Dilger <andreas.dilger@intel.com>
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      923ae0ff
    • M
      dax: add dax_zero_page_range · 25726bc1
      Matthew Wilcox 提交于
      This new function allows us to support hole-punch for DAX files by zeroing
      a partial page, as opposed to the dax_truncate_page() function which can
      only truncate to the end of the page.  Reimplement dax_truncate_page() to
      call dax_zero_page_range().
      
      [ross.zwisler@linux.intel.com: ported to 3.13-rc2]
      [akpm@linux-foundation.org: fix typos in comments]
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Signed-off-by: NRoss Zwisler <ross.zwisler@linux.intel.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      25726bc1
    • M
      ext2: get rid of most mentions of XIP in ext2 · 9c3ce9ec
      Matthew Wilcox 提交于
      To help people transition, accept the 'xip' mount option (and report it in
      /proc/mounts), but print a message encouraging people to switch over to
      the 'dax' option.
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      9c3ce9ec
    • M
      ext2: remove ext2_aops_xip · 97443aa8
      Matthew Wilcox 提交于
      We shouldn't need a special address_space_operations any more
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      97443aa8
    • M
      vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX · 6cd176a5
      Matthew Wilcox 提交于
      The fewer Kconfig options we have the better.  Use the generic
      CONFIG_FS_DAX to enable XIP support in ext2 as well as in the core.
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      6cd176a5
    • M
      ext2: remove xip.c and xip.h · 07642381
      Matthew Wilcox 提交于
      These files are now empty, so delete them
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      07642381
    • M
      ext2: remove ext2_use_xip · ed87e920
      Matthew Wilcox 提交于
      Replace ext2_use_xip() with test_opt(XIP) which expands to the same code
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      ed87e920
    • M
      ext2: remove ext2_xip_verify_sb() · 0de4830f
      Matthew Wilcox 提交于
      Jan Kara pointed out that calling ext2_xip_verify_sb() in ext2_remount()
      doesn't make sense, since changing the XIP option on remount isn't
      allowed.  It also doesn't make sense to re-check whether blocksize is
      supported since it can't change between mounts.
      
      Replace the call to ext2_xip_verify_sb() in ext2_fill_super() with the
      equivalent check and delete the definition.
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      0de4830f
    • M
      vfs: remove get_xip_mem · e748dcd0
      Matthew Wilcox 提交于
      All callers of get_xip_mem() are now gone.  Remove checks for it,
      initialisers of it, documentation of it and the only implementation of it.
       Also remove mm/filemap_xip.c as it is now empty.  Also remove
      documentation of the long-gone get_xip_page().
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      e748dcd0
    • M
      dax: replace XIP documentation with DAX documentation · 95ec8dab
      Matthew Wilcox 提交于
      Based on the original XIP documentation, this documents the current state
      of affairs, and includes instructions on how users can enable DAX if their
      devices and kernel support it.
      Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
      Reviewed-by: NRandy Dunlap <rdunlap@infradead.org>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      95ec8dab
    • M
      dax,ext2: replace xip_truncate_page with dax_truncate_page · 4c0ccfef
      Matthew Wilcox 提交于
      It takes a get_block parameter just like nobh_truncate_page() and
      block_truncate_page()
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      4c0ccfef
    • M
      dax,ext2: replace the XIP page fault handler with the DAX page fault handler · f7ca90b1
      Matthew Wilcox 提交于
      Instead of calling aops->get_xip_mem from the fault handler, the
      filesystem passes a get_block_t that is used to find the appropriate
      blocks.
      
      This requires that all architectures implement copy_user_page().  At the
      time of writing, mips and arm do not.  Patches exist and are in progress.
      
      [akpm@linux-foundation.org: remap_file_pages went away]
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NJan Kara <jack@suse.cz>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      f7ca90b1
    • M
      dax,ext2: replace ext2_clear_xip_target with dax_clear_blocks · 289c6aed
      Matthew Wilcox 提交于
      This is practically generic code; other filesystems will want to call it
      from other places, but there's nothing ext2-specific about it.
      
      Make it a little more generic by allowing it to take a count of the number
      of bytes to zero rather than fixing it to a single page.  Thanks to Dave
      Hansen for suggesting that I need to call cond_resched() if zeroing more
      than one page.
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      289c6aed
    • M
      dax,ext2: replace XIP read and write with DAX I/O · d475c634
      Matthew Wilcox 提交于
      Use the generic AIO infrastructure instead of custom read and write
      methods.  In addition to giving us support for AIO, this adds the missing
      locking between read() and truncate().
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NRoss Zwisler <ross.zwisler@linux.intel.com>
      Reviewed-by: NJan Kara <jack@suse.cz>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d475c634
    • M
      vfs,ext2: introduce IS_DAX(inode) · fbbbad4b
      Matthew Wilcox 提交于
      Use an inode flag to tag inodes which should avoid using the page cache.
      Convert ext2 to use it instead of mapping_is_xip().  Prevent I/Os to files
      tagged with the DAX flag from falling back to buffered I/O.
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NJan Kara <jack@suse.cz>
      Reviewed-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      fbbbad4b
    • M
      mm: allow page fault handlers to perform the COW · 2e4cdab0
      Matthew Wilcox 提交于
      Currently COW of an XIP file is done by first bringing in a read-only
      mapping, then retrying the fault and copying the page.  It is much more
      efficient to tell the fault handler that a COW is being attempted (by
      passing in the pre-allocated page in the vm_fault structure), and allow
      the handler to perform the COW operation itself.
      
      The handler cannot insert the page itself if there is already a read-only
      mapping at that address, so allow the handler to return VM_FAULT_LOCKED
      and set the fault_page to be NULL.  This indicates to the MM code that the
      i_mmap_lock is held instead of the page lock.
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jan Kara <jack@suse.cz>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      2e4cdab0
    • M
      mm: fix XIP fault vs truncate race · 283307c7
      Matthew Wilcox 提交于
      DAX is a replacement for the variation of XIP currently supported by the
      ext2 filesystem.  We have three different things in the tree called 'XIP',
      and the new focus is on access to data rather than executables, so a name
      change was in order.  DAX stands for Direct Access.  The X is for
      eXciting.
      
      The new focus on data access has resulted in more careful attention to
      races that exist in the current XIP code, but are not hit by the use-case
      that it was designed for.  XIP's architecture worked fine for ext2, but
      DAX is architected to work with modern filsystems such as ext4 and XFS.
      DAX is not intended for use with btrfs; the value that btrfs adds relies
      on manipulating data and writing data to different locations, while DAX's
      value is for write-in-place and keeping the kernel from touching the data.
      
      DAX was developed in order to support NV-DIMMs, but it's become clear that
      its usefuless extends beyond NV-DIMMs and there are several potential
      customers including the tracing machinery.  Other people want to place the
      kernel log in an area of memory, as long as they have a BIOS that does not
      clear DRAM on reboot.
      
      Patch 1 is a bug fix, probably worth including in 3.18.
      
      Patches 2 & 3 are infrastructure for DAX.
      
      Patches 4-8 replace the XIP code with its DAX equivalents, transforming
      ext2 to use the DAX code as we go.  Note that patch 10 is the
      Documentation patch.
      
      Patches 9-15 clean up after the XIP code, removing the infrastructure
      that is no longer needed and renaming various XIP things to DAX.
      Most of these patches were added after Jan found things he didn't
      like in an earlier version of the ext4 patch ... that had been copied
      from ext2.  So ext2 i being transformed to do things the same way that
      ext4 will later.  The ability to mount ext2 filesystems with the 'xip'
      option is retained, although the 'dax' option is now preferred.
      
      Patch 16 adds some DAX infrastructure to support ext4.
      
      Patch 17 adds DAX support to ext4.  It is broadly similar to ext2's DAX
      support, but it is more efficient than ext4's due to its support for
      unwritten extents.
      
      Patch 18 is another cleanup patch renaming XIP to DAX.
      
      My thanks to Mathieu Desnoyers for his reviews of the v11 patchset.  Most
      of the changes below were based on his feedback.
      
      This patch (of 18):
      
      Pagecache faults recheck i_size after taking the page lock to ensure that
      the fault didn't race against a truncate.  We don't have a page to lock in
      the XIP case, so use i_mmap_lock_read() instead.  It is locked in the
      truncate path in unmap_mapping_range() after updating i_size.  So while we
      hold it in the fault path, we are guaranteed that either i_size has
      already been updated in the truncate path, or that the truncate will
      subsequently call zap_page_range_single() and so remove the mapping we
      have just inserted.
      
      There is a window of time in which i_size has been reduced and the thread
      has a mapping to a page which will be removed from the file, but this is
      harmless as the page will not be allocated to a different purpose before
      the thread's access to it is revoked.
      
      [akpm@linux-foundation.org: switch to i_mmap_lock_read(), add comment in unmap_single_vma()]
      Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>
      Reviewed-by: NJan Kara <jack@suse.cz>
      Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Reviewed-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com>
      Cc: Andreas Dilger <andreas.dilger@intel.com>
      Cc: Boaz Harrosh <boaz@plexistor.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Dave Chinner <david@fromorbit.com>
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Randy Dunlap <rdunlap@infradead.org>
      Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      283307c7
    • A
      arm: dts: zynq: update isl9305 compatible string to use isil vendor prefix · b4770fe5
      Arnaud Ebalard 提交于
      "isil" and "isl" prefixes are used at various locations inside the kernel
      to reference Intersil corporation.  This patch is part of a series fixing
      those locations were "isl" is used in compatible strings to use the now
      expected "isil" prefix instead (NASDAQ symbol for Intersil and most used
      version).
      
      Note: isl9305 is an I2C device so the patch does not in fact currently
      depend on the introduction of "isil"-based compatible string in isl9305
      driver (provided by another patch) because I2C core does not check the
      prefix yet.
      Signed-off-by: NArnaud Ebalard <arno@natisbad.org>
      Cc: Rob Herring <robh+dt@kernel.org>
      Cc: Pawel Moll <pawel.moll@arm.com>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
      Cc: Kumar Gala <galak@codeaurora.org>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Stephen Warren <swarren@wwwdotorg.org>
      Cc: Thierry Reding <thierry.reding@gmail.com>
      Cc: Alexandre Courbot <gnurou@gmail.com>
      Cc: Uwe Kleine-Knig <uwe@kleine-koenig.org>
      Cc: Alessandro Zummo <a.zummo@towertech.it>
      Cc: Peter Huewe <peter.huewe@infineon.com>
      Cc: Linus Walleij <linus.walleij@linaro.org>
      Cc: Mark Brown <broonie@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Darshana Padmadas <darshanapadmadas@gmail.com>
      Cc: Grant Likely <grant.likely@linaro.org>
      Cc: Rob Landley <rob@landley.net>
      Cc: Jason Cooper <jason@lakedaemon.net>
      Cc: Guenter Roeck <linux@roeck-us.net>
      Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
      Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      b4770fe5
    • A
      staging: iio: isl29028: deprecate use of isl in compatible string for isil · 37e5157d
      Arnaud Ebalard 提交于
      "isil" and "isl" prefixes are used at various locations inside the kernel
      to reference Intersil corporation.  This patch is part of a series fixing
      those locations were "isl" is used in compatible strings to use the now
      expected "isil" prefix instead (NASDAQ symbol for Intersil and most used
      version).  The old compatible string is kept for backward compatibility.
      Signed-off-by: NArnaud Ebalard <arno@natisbad.org>
      Cc: Rob Herring <robh+dt@kernel.org>
      Cc: Pawel Moll <pawel.moll@arm.com>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
      Cc: Kumar Gala <galak@codeaurora.org>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Stephen Warren <swarren@wwwdotorg.org>
      Cc: Thierry Reding <thierry.reding@gmail.com>
      Cc: Alexandre Courbot <gnurou@gmail.com>
      Cc: Uwe Kleine-Knig <uwe@kleine-koenig.org>
      Cc: Alessandro Zummo <a.zummo@towertech.it>
      Cc: Peter Huewe <peter.huewe@infineon.com>
      Cc: Linus Walleij <linus.walleij@linaro.org>
      Cc: Mark Brown <broonie@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Darshana Padmadas <darshanapadmadas@gmail.com>
      Cc: Grant Likely <grant.likely@linaro.org>
      Cc: Rob Landley <rob@landley.net>
      Cc: Jason Cooper <jason@lakedaemon.net>
      Cc: Guenter Roeck <linux@roeck-us.net>
      Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
      Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      37e5157d
    • A
      rtc: isl12057: deprecate use of isl in compatible string for isil · 401b3c6a
      Arnaud Ebalard 提交于
      "isil" and "isl" prefixes are used at various locations inside the kernel
      to reference Intersil corporation.  This patch is part of a series fixing
      those locations were "isl" is used in compatible strings to use the now
      expected "isil" prefix instead (NASDAQ symbol for Intersil and most used
      version).  The old compatible string is kept for backward compatibility.
      Signed-off-by: NArnaud Ebalard <arno@natisbad.org>
      Cc: Rob Herring <robh+dt@kernel.org>
      Cc: Pawel Moll <pawel.moll@arm.com>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
      Cc: Kumar Gala <galak@codeaurora.org>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Stephen Warren <swarren@wwwdotorg.org>
      Cc: Thierry Reding <thierry.reding@gmail.com>
      Cc: Alexandre Courbot <gnurou@gmail.com>
      Cc: Uwe Kleine-Knig <uwe@kleine-koenig.org>
      Cc: Alessandro Zummo <a.zummo@towertech.it>
      Cc: Peter Huewe <peter.huewe@infineon.com>
      Cc: Linus Walleij <linus.walleij@linaro.org>
      Cc: Mark Brown <broonie@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Darshana Padmadas <darshanapadmadas@gmail.com>
      Cc: Grant Likely <grant.likely@linaro.org>
      Cc: Rob Landley <rob@landley.net>
      Cc: Jason Cooper <jason@lakedaemon.net>
      Cc: Guenter Roeck <linux@roeck-us.net>
      Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
      Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      401b3c6a
    • A
      rtc: isl12022: deprecate use of isl in compatible string for isil · c5cd8273
      Arnaud Ebalard 提交于
      "isil" and "isl" prefixes are used at various locations inside the kernel
      to reference Intersil corporation.  This patch is part of a series fixing
      those locations were "isl" is used in compatible strings to use the now
      expected "isil" prefix instead (NASDAQ symbol for Intersil and most used
      version).  The old compatible string is kept for backward compatibility.
      Signed-off-by: NArnaud Ebalard <arno@natisbad.org>
      Cc: Rob Herring <robh+dt@kernel.org>
      Cc: Pawel Moll <pawel.moll@arm.com>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
      Cc: Kumar Gala <galak@codeaurora.org>
      Cc: Russell King <linux@arm.linux.org.uk>
      Cc: Stephen Warren <swarren@wwwdotorg.org>
      Cc: Thierry Reding <thierry.reding@gmail.com>
      Cc: Alexandre Courbot <gnurou@gmail.com>
      Cc: Uwe Kleine-Knig <uwe@kleine-koenig.org>
      Cc: Alessandro Zummo <a.zummo@towertech.it>
      Cc: Peter Huewe <peter.huewe@infineon.com>
      Cc: Linus Walleij <linus.walleij@linaro.org>
      Cc: Mark Brown <broonie@kernel.org>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Darshana Padmadas <darshanapadmadas@gmail.com>
      Cc: Grant Likely <grant.likely@linaro.org>
      Cc: Rob Landley <rob@landley.net>
      Cc: Jason Cooper <jason@lakedaemon.net>
      Cc: Guenter Roeck <linux@roeck-us.net>
      Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
      Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c5cd8273
  2. 16 2月, 2015 7 次提交
    • L
      Merge tag 'cris-for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris · 1fa185eb
      Linus Torvalds 提交于
      Pull CRIS changes from Jesper Nilsson.
      
      * tag 'cris-for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris:
        CRIS: Whitespace cleanup
        CRIS: macro whitespace fixes in uaccess.h
        CRIS: uaccess: fix sparse errors
        CRISv32: Remove unnecessary KERN_INFO from sync_serial
        CRIS: Fix missing NR_CPUS in menuconfig
        CRISv32: Avoid warning of unused variable
        CRIS: Avoid warning in cris mm/fault.c
        CRIS: Export csum_partial_copy_nocheck
      1fa185eb
    • L
      Merge tag 'tty-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty · a9724125
      Linus Torvalds 提交于
      Pull tty/serial driver patches from Greg KH:
       "Here's the big tty/serial driver update for 3.20-rc1.  Nothing huge
        here, just lots of driver updates and some core tty layer fixes as
        well.  All have been in linux-next with no reported issues"
      
      * tag 'tty-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (119 commits)
        serial: 8250: Fix UART_BUG_TXEN workaround
        serial: driver for ETRAX FS UART
        tty: remove unused variable sprop
        serial: of-serial: fetch line number from DT
        serial: samsung: earlycon support depends on CONFIG_SERIAL_SAMSUNG_CONSOLE
        tty/serial: serial8250_set_divisor() can be static
        tty/serial: Add Spreadtrum sc9836-uart driver support
        Documentation: DT: Add bindings for Spreadtrum SoC Platform
        serial: samsung: remove redundant interrupt enabling
        tty: Remove external interface for tty_set_termios()
        serial: omap: Fix RTS handling
        serial: 8250_omap: Use UPSTAT_AUTORTS for RTS handling
        serial: core: Rework hw-assisted flow control support
        tty/serial: 8250_early: Add support for PXA UARTs
        tty/serial: of_serial: add support for PXA/MMP uarts
        tty/serial: of_serial: add DT alias ID handling
        serial: 8250: Prevent concurrent updates to shadow registers
        serial: 8250: Use canary to restart console after suspend
        serial: 8250: Refactor XR17V35X divisor calculation
        serial: 8250: Refactor divisor programming
        ...
      a9724125
    • L
      Merge tag 'staging-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · 46f7b635
      Linus Torvalds 提交于
      Pull staging drivers patches from Greg KH:
       "Here's the big staging driver tree update for 3.20-rc1.
      
        Lots of little things in here, adding up to lots of overall cleanups.
        The IIO driver updates are also in here as they cross the staging tree
        boundry a lot.  I2O has moved into staging as well, as a plan to drop
        it from the tree eventually as that's a dead subsystem.
      
        All of this has been in linux-next with no reported issues for a
        while"
      
      * tag 'staging-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (740 commits)
        staging: lustre: lustre: libcfs: define symbols as static
        staging: rtl8712: Do coding style cleanup
        staging: lustre: make obd_updatemax_lock static
        staging: rtl8188eu: core: switch with redundant cases
        staging: rtl8188eu: odm: conditional setting with no effect
        staging: rtl8188eu: odm: condition with no effect
        staging: ft1000: fix braces warning
        staging: sm7xxfb: fix remaining CamelCase
        staging: sm7xxfb: fix CamelCase
        staging: rtl8723au: multiple condition with no effect - if identical to else
        staging: sm7xxfb: make smtc_scr_info static
        staging/lustre/mdc: Initialize req in mdc_enqueue for !it case
        staging/lustre/clio: Do not allow group locks with gid 0
        staging/lustre/llite: don't add to page cache upon failure
        staging/lustre/llite: Add exception entry check after radix_tree
        staging/lustre/libcfs: protect kkuc_groups from write access
        staging/lustre/fld: refer to MDT0 for fld lookup in some cases
        staging/lustre/llite: Solve a race to access lli_has_smd in read case
        staging/lustre/ptlrpc: hold rq_lock when modify rq_flags
        staging/lustre/lnet: portal spreading rotor should be unsigned
        ...
      46f7b635
    • L
      Merge tag 'driver-core-3.20-rc1' of... · 9682ec96
      Linus Torvalds 提交于
      Merge tag 'driver-core-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
      
      Pull driver core patches from Greg KH:
       "Really tiny set of patches for this kernel.  Nothing major, all
        described in the shortlog and have been in linux-next for a while"
      
      * tag 'driver-core-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
        sysfs: fix warning when creating a sysfs group without attributes
        firmware_loader: handle timeout via wait_for_completion_interruptible_timeout()
        firmware_loader: abort request if wait_for_completion is interrupted
        firmware: Correct function name in comment
        device: Change dev_<level> logging functions to return void
        device: Fix dev_dbg_once macro
      9682ec96
    • L
      Merge tag 'char-misc-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc · 4ba63072
      Linus Torvalds 提交于
      Pull char / misc patches from Greg KH:
       "Here's the big char/misc driver update for 3.20-rc1.
      
        Lots of little things in here, all described in the changelog.
        Nothing major or unusual, except maybe the binder selinux stuff, which
        was all acked by the proper selinux people and they thought it best to
        come through this tree.
      
        All of this has been in linux-next with no reported issues for a while"
      
      * tag 'char-misc-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (90 commits)
        coresight: fix function etm_writel_cp14() parameter order
        coresight-etm: remove check for unknown Kconfig macro
        coresight: fixing CPU hwid lookup in device tree
        coresight: remove the unnecessary function coresight_is_bit_set()
        coresight: fix the debug AMBA bus name
        coresight: remove the extra spaces
        coresight: fix the link between orphan connection and newly added device
        coresight: remove the unnecessary replicator property
        coresight: fix the replicator subtype value
        pdfdocs: Fix 'make pdfdocs' failure for 'uio-howto.tmpl'
        mcb: Fix error path of mcb_pci_probe
        virtio/console: verify device has config space
        ti-st: clean up data types (fix harmless memory corruption)
        mei: me: release hw from reset only during the reset flow
        mei: mask interrupt set bit on clean reset bit
        extcon: max77693: Constify struct regmap_config
        extcon: adc-jack: Release IIO channel on driver remove
        extcon: Remove duplicated include from extcon-class.c
        Drivers: hv: vmbus: hv_process_timer_expiration() can be static
        Drivers: hv: vmbus: serialize Offer and Rescind offer
        ...
      4ba63072
    • L
      Merge tag 'usb-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb · e2987672
      Linus Torvalds 提交于
      Pull USB patches from Greg KH:
       "Here's the big pull request for the USB driver tree for 3.20-rc1.
      
        Nothing major happening here, just lots of gadget driver updates, new
        device ids, and a bunch of cleanups.
      
        All of these have been in linux-next for a while with no reported
        issues"
      
      * tag 'usb-3.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (299 commits)
        usb: musb: fix device hotplug behind hub
        usb: dwc2: Fix a bug in reading the endpoint directions from reg.
        staging: emxx_udc: fix the build error
        usb: Retry port status check on resume to work around RH bugs
        Revert "usb: Reset USB-3 devices on USB-3 link bounce"
        uhci-hub: use HUB_CHAR_*
        usb: kconfig: replace PPC_OF with PPC
        ehci-pci: disable for Intel MID platforms (update)
        usb: gadget: Kconfig: use bool instead of boolean
        usb: musb: blackfin: remove incorrect __exit_p()
        USB: fix use-after-free bug in usb_hcd_unlink_urb()
        ehci-pci: disable for Intel MID platforms
        usb: host: pci_quirks: joing string literals
        USB: add flag for HCDs that can't receive wakeup requests (isp1760-hcd)
        USB: usbfs: allow URBs to be reaped after disconnection
        cdc-acm: kill unnecessary messages
        cdc-acm: add sanity checks
        usb: phy: phy-generic: Fix USB PHY gpio reset
        usb: dwc2: fix USB core dependencies
        usb: renesas_usbhs: fix NULL pointer dereference in dma_release_channel()
        ...
      e2987672
    • L
      Merge branch 'for-linus-v3.20' of git://git.infradead.org/linux-ubifs · 8c988ae7
      Linus Torvalds 提交于
      Pull UBI and UBIFS updates from Richard Weinberger:
       - cleanups and bug fixes all over UBI and UBIFS
       - block-mq support for UBI Block
       - UBI volumes can now be renamed while they are in use
       - security.* XATTR support for UBIFS
       - a maintainer update
      
      * 'for-linus-v3.20' of git://git.infradead.org/linux-ubifs:
        UBI: block: Fix checking for NULL instead of IS_ERR()
        UBI: block: Continue creating ubiblocks after an initialization error
        UBIFS: return -EINVAL if log head is empty
        UBI: Block: Explain usage of blk_rq_map_sg()
        UBI: fix soft lockup in ubi_check_volume()
        UBI: Fastmap: Care about the protection queue
        UBIFS: add a couple of extra asserts
        UBI: do propagate positive error codes up
        UBI: clean-up printing helpers
        UBI: extend UBI layer debug/messaging capabilities - cosmetics
        UBIFS: add ubifs_err() to print error reason
        UBIFS: Add security.* XATTR support for the UBIFS
        UBIFS: Add xattr support for symlinks
        UBI: Block: Add blk-mq support
        UBI: Add initial support for scatter gather
        UBI: rename_volumes: Use UBI_METAONLY
        UBI: Implement UBI_METAONLY
        Add myself as UBI co-maintainer
      8c988ae7
  3. 15 2月, 2015 6 次提交