Eric Lee / smarc-fsl-linux-kernel

09 May, 2007

1 commit

08 May, 2007

1 commit

  • 6fe6900e1   mm: make read_cache_page synchronous ... Browse Code »

    Ensure pages are uptodate after returning from read_cache_page, which allows
    us to cut out most of the filesystem-internal PageUptodate calls.

    I didn't have a great look down the call chains, but this appears to fixes 7
    possible use-before uptodate in hfs, 2 in hfsplus, 1 in jfs, a few in
    ecryptfs, 1 in jffs2, and a possible cleared data overwritten with readpage in
    block2mtd. All depending on whether the filler is async and/or can return
    with a !uptodate page.

    Signed-off-by: Nick Piggin
    Cc: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

10 Feb, 2007

1 commit

29 Oct, 2006

1 commit

  • 2ae88149a   [PATCH] mm: clean up pagecache allocation ... Browse Code »

    - Consolidate page_cache_alloc

    - Fix splice: only the pagecache pages and filesystem data need to use
    mapping_gfp_mask.

    - Fix grab_cache_page_nowait: same as splice, also honour NUMA placement.

    Signed-off-by: Nick Piggin
    Cc: Jens Axboe
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

26 Sep, 2006

1 commit

  • db37648cd   [PATCH] mm: non syncing lock_page() ... Browse Code »

    lock_page needs the caller to have a reference on the page->mapping inode
    due to sync_page, ergo set_page_dirty_lock is obviously buggy according to
    its comments.

    Solve it by introducing a new lock_page_nosync which does not do a sync_page.

    akpm: unpleasant solution to an unpleasant problem. If it goes wrong it could
    cause great slowdowns while the lock_page() caller waits for kblockd to
    perform the unplug. And if a filesystem has special sync_page() requirements
    (none presently do), permanent hangs are possible.

    otoh, set_page_dirty_lock() is usually (always?) called against userspace
    pages. They are always up-to-date, so there shouldn't be any pending read I/O
    against these pages.

    Signed-off-by: Nick Piggin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

01 Jul, 2006

1 commit

  • 347ce434d   [PATCH] zoned vm counters: conversion of nr_pagecache to per zone counter ... Browse Code »

    Currently a single atomic variable is used to establish the size of the page
    cache in the whole machine. The zoned VM counters have the same method of
    implementation as the nr_pagecache code but also allow the determination of
    the pagecache size per zone.

    Remove the special implementation for nr_pagecache and make it a zoned counter
    named NR_FILE_PAGES.

    Updates of the page cache counters are always performed with interrupts off.
    We can therefore use the __ variant here.

    Signed-off-by: Christoph Lameter
    Cc: Trond Myklebust
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Lameter
     

23 Jun, 2006

1 commit

  • 090d2b185   [PATCH] read_mapping_page for address space ... Browse Code »

    Add read_mapping_page() which is used for callers that pass
    mapping->a_ops->readpage as the filler for read_cache_page. This removes
    some duplication from filesystem code.

    Signed-off-by: Pekka Enberg
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Pekka Enberg
     

27 Apr, 2006

1 commit

01 Apr, 2006

1 commit

  • 93fac7041   [PATCH] mm: schedule find_trylock_page() removal ... Browse Code »

    find_trylock_page() is an odd interface in that it doesn't take a reference
    like the others. Now that XFS no longer uses it, and its last remaining
    caller actually wants an elevated refcount, opencode that callsite and
    schedule find_trylock_page() for removal.

    Signed-off-by: Nick Piggin
    Acked-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

24 Mar, 2006

1 commit

  • 44110fe38   [PATCH] cpuset memory spread page cache implementation and hooks ... Browse Code »

    Change the page cache allocation calls to support cpuset memory spreading.

    See the previous patch, cpuset_mem_spread, for an explanation of cpuset memory
    spreading.

    On systems without cpusets configured in the kernel, this is no change.

    On systems with cpusets configured in the kernel, but the "memory_spread"
    cpuset option not enabled for the current tasks cpuset, this adds a call to a
    cpuset routine and failed bit test of the processor state flag PF_SPREAD_PAGE.

    On tasks in cpusets with "memory_spread" enabled, this adds a call to a cpuset
    routine that computes which of the tasks mems_allowed nodes should be
    preferred for this allocation.

    If memory spreading applies to a particular allocation, then any other NUMA
    mempolicy does not apply.

    Signed-off-by: Paul Jackson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Paul Jackson
     

14 Nov, 2005

1 commit

  • 2d6c666e8   [PATCH] mm: gfp_noreclaim cleanup ... Browse Code »

    Remove last remnant of the defunct early reclaim page logic, the no longer
    used __GFP_NORECLAIM flag bit.

    Signed-off-by: Paul Jackson
    Acked-by: Martin Hicks
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Paul Jackson
     

28 Oct, 2005

2 commits

09 Oct, 2005

1 commit

  • dd0fc66fb   [PATCH] gfp flags annotations - part 1 ... Browse Code »

    - added typedef unsigned int __nocast gfp_t;

    - replaced __nocast uses for gfp flags with gfp_t - it gives exactly
    the same warnings as far as sparse is concerned, doesn't change
    generated code (from gcc point of view we replaced unsigned int with
    typedef) and documents what's going on far better.

    Signed-off-by: Al Viro
    Signed-off-by: Linus Torvalds

    Al Viro
     

22 Jun, 2005

1 commit

  • 0c35bbadc   [PATCH] VM: add __GFP_NORECLAIM ... Browse Code »

    When using the early zone reclaim, it was noticed that allocating new pages
    that should be spread across the whole system caused eviction of local pages.

    This adds a new GFP flag to prevent early reclaim from happening during
    certain allocation attempts. The example that is implemented here is for page
    cache pages. We want page cache pages to be spread across the whole system,
    and we don't want page cache pages to evict other pages to get local memory.

    Signed-off-by: Martin Hicks
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Martin Hicks
     

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