[SCM] Hurd branch, master, updated. 7f0e0da1fb514c30df296e22481761b77f6d3a6a

[Samuel Thibault]

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- Log -----------------------------------------------------------------
commit 7f0e0da1fb514c30df296e22481761b77f6d3a6a
Author: Sergio López <address@hidden>
Date:   Thu Sep 29 11:44:40 2011 +0200

    Sync pager before clearing MAY_CACHE flag
    
    Clearing MAY_CACHE flag on a pager initiates a memory object
    termination if this one is not referenced anymore. If the object has a
    significant number of dirty pages (i.e. a file recently created was
    unlinked before diskfs periodical sync) this operation generates a lot
    of stress on the translator. This is one of the most common sources
    for thread storms.
    
    Sync'ing the pager before clearing that flag ensures that there aren't
    dirty pages in the object before its termination.
    
    * ext2fs/pager.c (drop_pager_softrefs): Sync pager before clearing
    MAY_CACHE flag.

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Summary of changes:
 ext2fs/pager.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)


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