Eric Lee / smarc-fsl-linux-kernel

06 Feb, 2008

1 commit

  • eebd2aa35   Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user ... Browse Code »

    Simplify page cache zeroing of segments of pages through 3 functions

    zero_user_segments(page, start1, end1, start2, end2)

    Zeros two segments of the page. It takes the position where to
    start and end the zeroing which avoids length calculations and
    makes code clearer.

    zero_user_segment(page, start, end)

    Same for a single segment.

    zero_user(page, start, length)

    Length variant for the case where we know the length.

    We remove the zero_user_page macro. Issues:

    1. Its a macro. Inline functions are preferable.

    2. The KM_USER0 macro is only defined for HIGHMEM.

    Having to treat this special case everywhere makes the
    code needlessly complex. The parameter for zeroing is always
    KM_USER0 except in one single case that we open code.

    Avoiding KM_USER0 makes a lot of code not having to be dealing
    with the special casing for HIGHMEM anymore. Dealing with
    kmap is only necessary for HIGHMEM configurations. In those
    configurations we use KM_USER0 like we do for a series of other
    functions defined in highmem.h.

    Since KM_USER0 is depends on HIGHMEM the existing zero_user_page
    function could not be a macro. zero_user_* functions introduced
    here can be be inline because that constant is not used when these
    functions are called.

    Also extract the flushing of the caches to be outside of the kmap.

    [akpm@linux-foundation.org: fix nfs and ntfs build]
    [akpm@linux-foundation.org: fix ntfs build some more]
    Signed-off-by: Christoph Lameter
    Cc: Steven French
    Cc: Michael Halcrow
    Cc:
    Cc: Steven Whitehouse
    Cc: Trond Myklebust
    Cc: "J. Bruce Fields"
    Cc: Anton Altaparmakov
    Cc: Mark Fasheh
    Cc: David Chinner
    Cc: Michael Halcrow
    Cc: Steven French
    Cc: Steven Whitehouse
    Cc: Trond Myklebust
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     

04 Nov, 2007

1 commit

  • ebab89909   NTFS: Fix read regression. ... Browse Code »

    The regression was caused by:
    commit[a32ea1e1f925399e0d81ca3f7394a44a6dafa12c] Fix read/truncate race

    This causes ntfs_readpage() to be called for a zero i_size inode, which
    failed when the file was compressed and non-resident.

    Thanks a lot to Mike Galbraith for reporting the issue and tracking down
    the commit that caused the regression.

    Looking into it I found three bugs which the patch fixes.

    Signed-off-by: Anton Altaparmakov
    Tested-by: Mike Galbraith
    Signed-off-by: Linus Torvalds

    Anton Altaparmakov
     

13 Oct, 2007

1 commit

  • bfab36e81   NTFS: Fix a mount time deadlock. ... Browse Code »

    Big thanks go to Mathias Kolehmainen for reporting the bug, providing
    debug output and testing the patches I sent him to get it working.

    The fix was to stop calling ntfs_attr_set() at mount time as that causes
    balance_dirty_pages_ratelimited() to be called which on systems with
    little memory actually tries to go and balance the dirty pages which tries
    to take the s_umount semaphore but because we are still in fill_super()
    across which the VFS holds s_umount for writing this results in a
    deadlock.

    We now do the dirty work by hand by submitting individual buffers. This
    has the annoying "feature" that mounting can take a few seconds if the
    journal is large as we have clear it all. One day someone should improve
    on this by deferring the journal clearing to a helper kernel thread so it
    can be done in the background but I don't have time for this at the moment
    and the current solution works fine so I am leaving it like this for now.

    Signed-off-by: Anton Altaparmakov
    Signed-off-by: Linus Torvalds

    Anton Altaparmakov
     

13 May, 2007

1 commit

  • e3bf460f3   ntfs: use zero_user_page ... Browse Code »

    Use zero_user_page() instead of open-coding it.

    [akpm@linux-foundation.org: kmap-type fixes]
    Signed-off-by: Nate Diller
    Acked-by: Anton Altaparmakov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nate Diller
     

31 Jan, 2007

1 commit

01 Oct, 2006

1 commit

29 Jun, 2006

1 commit

24 Mar, 2006

1 commit

23 Mar, 2006

2 commits

24 Feb, 2006

1 commit

19 Oct, 2005

1 commit

11 Oct, 2005

1 commit

19 Sep, 2005

2 commits

11 Sep, 2005

1 commit

  • b4012a989   [PATCH] ntfs build fix ... Browse Code »

    *** Warning: "bit_spin_lock" [fs/ntfs/ntfs.ko] undefined!
    *** Warning: "bit_spin_unlock" [fs/ntfs/ntfs.ko] undefined!

    Cc: Anton Altaparmakov
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     

09 Sep, 2005

8 commits

17 Aug, 2005

1 commit

25 Jun, 2005

1 commit

05 May, 2005

8 commits

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds