linux/fs/jfs
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
..
acl.c posix acls: Remove duplicate xattr name definitions 2015-12-06 21:25:17 -05:00
file.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
inode.c don't put symlink bodies in pagecache into highmem 2015-12-08 22:41:36 -05:00
ioctl.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
jfs_acl.h jfs: use generic posix ACL infrastructure 2014-01-25 23:58:22 -05:00
jfs_btree.h
jfs_debug.c
jfs_debug.h
jfs_dinode.h
jfs_discard.c jfs: Fix FITRIM argument handling 2012-10-17 09:18:38 -05:00
jfs_discard.h fs/jfs: TRIM support for JFS Filesystem 2012-09-17 11:58:19 -05:00
jfs_dmap.c fs/jfs/jfs_dmap.c: replace min/casting by min_t 2014-06-03 14:14:00 -05:00
jfs_dmap.h fs/jfs: TRIM support for JFS Filesystem 2012-09-17 11:58:19 -05:00
jfs_dtree.c jfs: get rid of homegrown endianness helpers 2014-12-23 17:01:24 -06:00
jfs_dtree.h [readdir] convert jfs 2013-06-29 12:56:42 +04:00
jfs_extent.c jfs: Update jfs_error 2013-06-05 14:47:19 -05:00
jfs_extent.h
jfs_filsys.h fs/jfs: TRIM support for JFS Filesystem 2012-09-17 11:58:19 -05:00
jfs_imap.c jfs: Update jfs_error 2013-06-05 14:47:19 -05:00
jfs_imap.h
jfs_incore.h fs: cleanup slight list_entry abuse 2015-06-23 18:01:59 -04:00
jfs_inode.c jfs: Handle error from dquot_initialize() 2015-07-23 20:59:39 +02:00
jfs_inode.h fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers 2011-07-20 20:47:59 -04:00
jfs_lock.h
jfs_logmgr.c jfs: microoptimize get_zeroed_page / virt_to_page 2016-01-04 10:29:28 -05:00
jfs_logmgr.h Fix common misspellings 2011-03-31 11:26:23 -03:00
jfs_metapage.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
jfs_metapage.h mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
jfs_mount.c fix printk typo 'faild' 2010-08-09 11:25:17 +02:00
jfs_superblock.h jfs: Update jfs_error 2013-06-05 14:47:19 -05:00
jfs_txnmgr.c sched, cleanup, treewide: Remove set_current_state(TASK_RUNNING) after schedule() 2014-09-19 12:35:17 +02:00
jfs_txnmgr.h
jfs_types.h jfs: get rid of homegrown endianness helpers 2014-12-23 17:01:24 -06:00
jfs_umount.c jfs: flush journal completely before releasing metadata inodes 2011-08-01 12:41:00 -05:00
jfs_unicode.c
jfs_unicode.h include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
jfs_uniupr.c
jfs_xattr.h jfs: use generic posix ACL infrastructure 2014-01-25 23:58:22 -05:00
jfs_xtree.c jfs: Update jfs_error 2013-06-05 14:47:19 -05:00
jfs_xtree.h jfs: get rid of homegrown endianness helpers 2014-12-23 17:01:24 -06:00
Kconfig
Makefile fs/jfs: TRIM support for JFS Filesystem 2012-09-17 11:58:19 -05:00
namei.c don't put symlink bodies in pagecache into highmem 2015-12-08 22:41:36 -05:00
resize.c jfs: Update jfs_error 2013-06-05 14:47:19 -05:00
super.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
symlink.c switch ->get_link() to delayed_call, kill ->put_link() 2015-12-30 13:01:03 -05:00
xattr.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00