+ hfsplus-make-hfsplus_sync_fs-static.patch added to -mm tree

+ hfsplus-make-hfsplus_sync_fs-static.patch added to -mm tree

[akpm]

The patch titled
     Subject: hfsplus: make hfsplus_sync_fs() static
has been added to the -mm tree.  Its filename is
     hfsplus-make-hfsplus_sync_fs-static.patch

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------------------------------------------------------
From: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Subject: hfsplus: make hfsplus_sync_fs() static

This patchset makes HFSPLUS file-system stop using the VFS
'->write_supers()' callback and the '->s_dirt' superblock field because I
plan to remove them once all users are gone.

Like the other similar patchsets, we switch to a delayed job for writing
out the superblock instead of using the 's_dirt' flag.  Additionally, this
patch-set includes several clean-ups.

Reminder:

The goal is to get rid of the 'sync_supers()' kernel thread.  This kernel
thread wakes up every 5 seconds (by default) and calls '->write_super()'
for all mounted file-systems.  And the bad thing is that this is done even
if all the superblocks are clean.  Moreover, many file-systems do not even
need this end they do not register the '->write_super()' method at all
(e.g., btrfs).

So 'sync_supers()' most often just generates useless wakeups and wastes
power.  I am trying to make all filesystems independent of
'->write_super()' and plan to remove 'sync_supers()' and '->write_super()'
completely once there are no more users.

Tested using the fsstress test from the LTP project.


This patch:

Make hfsplus_sync_fs() static because it is used only in fs/hfsplus/super.c.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/hfsplus/hfsplus_fs.h |    1 -
 fs/hfsplus/super.c      |    2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff -puN fs/hfsplus/hfsplus_fs.h~hfsplus-make-hfsplus_sync_fs-static fs/hfsplus/hfsplus_fs.h
--- a/fs/hfsplus/hfsplus_fs.h~hfsplus-make-hfsplus_sync_fs-static
+++ a/fs/hfsplus/hfsplus_fs.h
@@ -428,7 +428,6 @@ int hfsplus_show_options(struct seq_file
 
 /* super.c */
 struct inode *hfsplus_iget(struct super_block *, unsigned long);
-int hfsplus_sync_fs(struct super_block *sb, int wait);
 
 /* tables.c */
 extern u16 hfsplus_case_fold_table[];
diff -puN fs/hfsplus/super.c~hfsplus-make-hfsplus_sync_fs-static fs/hfsplus/super.c
--- a/fs/hfsplus/super.c~hfsplus-make-hfsplus_sync_fs-static
+++ a/fs/hfsplus/super.c
@@ -161,7 +161,7 @@ static void hfsplus_evict_inode(struct i
 	}
 }
 
-int hfsplus_sync_fs(struct super_block *sb, int wait)
+static int hfsplus_sync_fs(struct super_block *sb, int wait)
 {
 	struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
 	struct hfsplus_vh *vhdr = sbi->s_vhdr;
_
Subject: Subject: hfsplus: make hfsplus_sync_fs() static

Patches currently in -mm which might be from artem.bityutskiy@linux.intel.com are

linux-next.patch
hfs-push-lock_super-down.patch
hfs-get-rid-of-lock_super.patch
hfs-remove-extra-mdb-write-on-unmount.patch
hfs-simplify-a-bit-checking-for-r-o.patch
hfs-introduce-vfs-superblock-object-back-reference.patch
hfs-get-rid-of-hfs_sync_super.patch
hfs-get-rid-of-hfs_sync_super-checkpatch-fixes.patch
hfsplus-make-hfsplus_sync_fs-static.patch
hfsplus-amend-debugging-print.patch
hfsplus-remove-useless-check.patch
hfsplus-get-rid-of-write_super.patch