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    vfs: export lseek_execute() to modules · 46a1c2c7
    Jie Liu 提交于
    For those file systems(btrfs/ext4/ocfs2/tmpfs) that support
    SEEK_DATA/SEEK_HOLE functions, we end up handling the similar
    matter in lseek_execute() to update the current file offset
    to the desired offset if it is valid, ceph also does the
    simliar things at ceph_llseek().
    
    To reduce the duplications, this patch make lseek_execute()
    public accessible so that we can call it directly from the
    underlying file systems.
    
    Thanks Dave Chinner for this suggestion.
    
    [AV: call it vfs_setpos(), don't bring the removed 'inode' argument back]
    
    v2->v1:
    - Add kernel-doc comments for lseek_execute()
    - Call lseek_execute() in ceph->llseek()
    Signed-off-by: NJie Liu <jeff.liu@oracle.com>
    Cc: Dave Chinner <dchinner@redhat.com>
    Cc: Al Viro <viro@zeniv.linux.org.uk>
    Cc: Andi Kleen <andi@firstfloor.org>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Christoph Hellwig <hch@lst.de>
    Cc: Chris Mason <chris.mason@fusionio.com>
    Cc: Josef Bacik <jbacik@fusionio.com>
    Cc: Ben Myers <bpm@sgi.com>
    Cc: Ted Tso <tytso@mit.edu>
    Cc: Hugh Dickins <hughd@google.com>
    Cc: Mark Fasheh <mfasheh@suse.com>
    Cc: Joel Becker <jlbec@evilplan.org>
    Cc: Sage Weil <sage@inktank.com>
    Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
    46a1c2c7
xfs_file.c 35.9 KB