05 Apr, 2016

1 commit

• 09cbfeaf1   mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros ... Browse Code »

  PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
  ago with promise that one day it will be possible to implement page
  cache with bigger chunks than PAGE_SIZE.

  This promise never materialized. And unlikely will.

  We have many places where PAGE_CACHE_SIZE assumed to be equal to
  PAGE_SIZE. And it's constant source of confusion on whether
  PAGE_CACHE_* or PAGE_* constant should be used in a particular case,
  especially on the border between fs and mm.

  Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much
  breakage to be doable.

  Let's stop pretending that pages in page cache are special. They are
  not.

  The changes are pretty straight-forward:

  - << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> ;

  - >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> ;

  - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN};

  - page_cache_get() -> get_page();

  - page_cache_release() -> put_page();

  This patch contains automated changes generated with coccinelle using
  script below. For some reason, coccinelle doesn't patch header files.
  I've called spatch for them manually.

  The only adjustment after coccinelle is revert of changes to
  PAGE_CAHCE_ALIGN definition: we are going to drop it later.

  There are few places in the code where coccinelle didn't reach. I'll
  fix them manually in a separate patch. Comments and documentation also
  will be addressed with the separate patch.

  virtual patch

  @@
  expression E;
  @@
  - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT)
  + E

  @@
  expression E;
  @@
  - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT)
  + E

  @@
  @@
  - PAGE_CACHE_SHIFT
  + PAGE_SHIFT

  @@
  @@
  - PAGE_CACHE_SIZE
  + PAGE_SIZE

  @@
  @@
  - PAGE_CACHE_MASK
  + PAGE_MASK

  @@
  expression E;
  @@
  - PAGE_CACHE_ALIGN(E)
  + PAGE_ALIGN(E)

  @@
  expression E;
  @@
  - page_cache_get(E)
  + get_page(E)

  @@
  expression E;
  @@
  - page_cache_release(E)
  + put_page(E)

  Signed-off-by: Kirill A. Shutemov
  Acked-by: Michal Hocko
  Signed-off-by: Linus Torvalds

  Kirill A. Shutemov

  2016-04-05 01:41:08 +0800  

01 Oct, 2006

1 commit

• c49c31115   [PATCH] fs/ntfs: Conversion to generic boolean ... Browse Code »

  Conversion of booleans to: generic-boolean.patch (2006-08-23)

  Signed-off-by: Richard Knutsson
  Signed-off-by: Anton Altaparmakov
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Richard Knutsson

  2006-10-01 15:39:19 +0800  

04 Oct, 2005

1 commit

• 18efefa93   NTFS: Fix a stupid bug in __ntfs_bitmap_set_bits_in_run() which caused the ... Browse Code »

  count to become negative and hence we had a wild memset() scribbling
  all over the system's ram.

  Signed-off-by: Anton Altaparmakov

  Anton Altaparmakov

  2005-10-04 20:06:00 +0800  

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

  2005-04-17 06:20:36 +0800