[SCM] Hurd branch, master, updated. v0.5-245-g8612278

[Justus Winter]

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- Log -----------------------------------------------------------------
commit 8612278973d167a20f4d60d018f18c6975b37cca
Author: Justus Winter <address@hidden>
Date:   Sat Apr 26 19:48:18 2014 +0200

    ext2fs: use two distinct pager buckets for the disk and file pager
    
    ext2fs has two kinds of pagers.  One for the files, one for the disk.
    Previously, both were in the same port bucket.
    
    If a request for a file pager arrives, it most likely touches some
    metadata (like the superblock).  This is in turn backed by the disk
    pager, so another request is generated for the disk pager.
    
    Seperate all pagers clearly by using two port buckets.  This will
    enable us to use a single thread per port bucket in the future.
    
    * ext2fs/pager.c (pager_bucket): Rename to...
    (disk_pager_bucket): ... this to make the change explicit at every
    occurrence.
    (file_pager_bucket): New variable.
    (service_paging_requests): New function.
    (create_disk_pager): Also create the file pager.
    (diskfs_get_filemap): Handout pagers from the file_pager_bucket.
    (diskfs_shutdown_pager): This is only concerned with the file pager.
    Simplify code accordingly.
    (diskfs_sync_everything): Likewise.
    (diskfs_pager_users): Likewise.
    (diskfs_max_user_pager_prot): Likewise.
    (disable_caching): Iterate over both buckets.
    (enable_caching): Likewise.

-----------------------------------------------------------------------

Summary of changes:
 ext2fs/pager.c |   87 ++++++++++++++++++++++++++++++++++++++++----------------
 1 files changed, 62 insertions(+), 25 deletions(-)


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