Commit Graph

15 Commits

Author SHA1 Message Date
Kirill A. Shutemov 09cbfeaf1a mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
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:

 - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>;

 - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>;

 - 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 <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-04 10:41:08 -07:00
Richard Knutsson c49c311150 [PATCH] fs/ntfs: Conversion to generic boolean
Conversion of booleans to: generic-boolean.patch (2006-08-23)

Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:19 -07:00
Anton Altaparmakov fc0fa7dc7d NTFS: - Change ntfs_cluster_alloc() to take an extra boolean parameter
specifying whether the cluster are being allocated to extend an
        attribute or to fill a hole.
      - Change ntfs_attr_make_non_resident() to call ntfs_cluster_alloc()
        with @is_extension set to TRUE and remove the runlist terminator
        fixup code as this is now done by ntfs_cluster_alloc().

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-10-04 14:36:56 +01:00
Anton Altaparmakov 511bea5ea2 NTFS: - Change {__,}ntfs_cluster_free() to also take an optional attribute
search context as argument.  This allows calling it with the mft
        record mapped.  Update all callers.
      - Fix potential deadlock in ntfs_mft_data_extend_allocation_nolock()
	error handling by passing in the active search context when calling
	ntfs_cluster_free().

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-10-04 14:24:21 +01:00
Anton Altaparmakov 69b41e3c02 NTFS: Change ntfs_attr_find_vcn_nolock() to also take an optional attribute
search context as argument.  This allows calling it with the mft
      record mapped.  Update all callers.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-10-04 14:01:14 +01:00
Anton Altaparmakov 715dc636b6 NTFS: Change ntfs_cluster_free() to require a write locked runlist on entry
since we otherwise get into a lock reversal deadlock if a read locked
      runlist is passed in. In the process also change it to take an ntfs
      inode instead of a vfs inode as parameter.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-23 11:24:28 +01:00
Anton Altaparmakov bbf1813fb8 NTFS: Fix cluster (de)allocators to work when the runlist is NULL and more
importantly to take a locked runlist rather than them locking it
      which leads to lock reversal.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 21:09:06 +01:00
Anton Altaparmakov 3bd1f4a173 NTFS: Fix several occurences of a bug where we would perform 'var & ~const'
with a 64-bit variable and a int, i.e. 32-bit, constant.  This causes
      the higher order 32-bits of the 64-bit variable to be zeroed.  To fix
      this cast the 'const' to the same 64-bit type as 'var'.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-06-25 16:51:58 +01:00
Anton Altaparmakov 53d59aad93 NTFS: Fix compilation when configured read-only.
- Add ifdef NTFS_RW around write specific code if fs/ntfs/runlist.[hc] and
  fs/ntfs/attrib.[hc].
- Minor bugfix to fs/ntfs/attrib.c::ntfs_attr_make_non_resident() where the
  runlist was not freed in all error cases.
- Add fs/ntfs/runlist.[hc]::ntfs_rl_find_vcn_nolock().

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 11:39:30 +01:00
Anton Altaparmakov 43b01fda8b NTFS: Fix sign of various error return values to be negative in
fs/ntfs/lcnalloc.c.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 11:23:20 +01:00
Anton Altaparmakov c0c1cc0e46 NTFS: - Fix bug in fs/ntfs/attrib.c::ntfs_find_vcn_nolock() where after
dropping the read lock and taking the write lock we were not checking
        whether someone else did not already do the work we wanted to do.
      - Rename ntfs_find_vcn_nolock() to ntfs_attr_find_vcn_nolock().
      - Tidy up some comments in fs/ntfs/runlist.c.
      - Add LCN_ENOMEM and LCN_EIO definitions to fs/ntfs/runlist.h.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 11:20:49 +01:00
Randy Dunlap 8907547d4b NTFS: Fix printk format warnings on ia64. (Randy Dunlap)
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 11:11:47 +01:00
Anton Altaparmakov b6ad6c52fe NTFS: - Split ntfs_map_runlist() into ntfs_map_runlist() and a non-locking
helper ntfs_map_runlist_nolock() which is used by ntfs_map_runlist().
	This allows us to map runlist fragments with the runlist lock already
	held without having to drop and reacquire it around the call.  Adapt
	all callers.
      - Change ntfs_find_vcn() to ntfs_find_vcn_nolock() which takes a locked
	runlist.  This allows us to find runlist elements with the runlist
	lock already held without having to drop and reacquire it around the
	call.  Adapt all callers.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 10:56:31 +01:00
Anton Altaparmakov db30d160cd NTFS: Use i_size_read() once and then use the cached value in
fs/ntfs/lcnalloc.c::ntfs_cluster_alloc().

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-04 17:00:18 +01:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
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!
2005-04-16 15:20:36 -07:00