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Date: Tue, 1 Sep 2009 13:18:59 +0200
From: Jens Axboe <jens.axboe@...cle.com>
To: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Cc: chris.mason@...cle.com, david@...morbit.com, hch@...radead.org,
tytso@....edu, akpm@...ux-foundation.org, jack@...e.cz,
Jens Axboe <jens.axboe@...cle.com>
Subject: [PATCH 1/8] writeback: move super_block argument to struct writeback_control
Signed-off-by: Jens Axboe <jens.axboe@...cle.com>
---
drivers/staging/pohmelfs/inode.c | 3 ++-
fs/fs-writeback.c | 14 +++++++-------
fs/ubifs/budget.c | 5 +++--
fs/ubifs/super.c | 3 ++-
include/linux/fs.h | 3 +--
include/linux/writeback.h | 2 ++
6 files changed, 17 insertions(+), 13 deletions(-)
diff --git a/drivers/staging/pohmelfs/inode.c b/drivers/staging/pohmelfs/inode.c
index 7b60579..9a94c5a 100644
--- a/drivers/staging/pohmelfs/inode.c
+++ b/drivers/staging/pohmelfs/inode.c
@@ -1951,12 +1951,13 @@ static int pohmelfs_get_sb(struct file_system_type *fs_type,
static void pohmelfs_kill_super(struct super_block *sb)
{
struct writeback_control wbc = {
+ .sb = sb,
.sync_mode = WB_SYNC_ALL,
.range_start = 0,
.range_end = LLONG_MAX,
.nr_to_write = LONG_MAX,
};
- generic_sync_sb_inodes(sb, &wbc);
+ generic_sync_sb_inodes(&wbc);
kill_anon_super(sb);
}
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index c54226b..8c43ca4 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -458,9 +458,9 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
* on the writer throttling path, and we get decent balancing between many
* throttled threads: we don't want them all piling up on inode_sync_wait.
*/
-void generic_sync_sb_inodes(struct super_block *sb,
- struct writeback_control *wbc)
+void generic_sync_sb_inodes(struct writeback_control *wbc)
{
+ struct super_block *sb = wbc->sb;
const unsigned long start = jiffies; /* livelock avoidance */
int sync = wbc->sync_mode == WB_SYNC_ALL;
@@ -595,10 +595,9 @@ void generic_sync_sb_inodes(struct super_block *sb,
}
EXPORT_SYMBOL_GPL(generic_sync_sb_inodes);
-static void sync_sb_inodes(struct super_block *sb,
- struct writeback_control *wbc)
+static void sync_sb_inodes(struct writeback_control *wbc)
{
- generic_sync_sb_inodes(sb, wbc);
+ generic_sync_sb_inodes(wbc);
}
/*
@@ -640,7 +639,7 @@ restart:
*/
if (down_read_trylock(&sb->s_umount)) {
if (sb->s_root)
- sync_sb_inodes(sb, wbc);
+ sync_sb_inodes(wbc);
up_read(&sb->s_umount);
}
spin_lock(&sb_lock);
@@ -666,6 +665,7 @@ restart:
void sync_inodes_sb(struct super_block *sb, int wait)
{
struct writeback_control wbc = {
+ .sb = sb,
.sync_mode = wait ? WB_SYNC_ALL : WB_SYNC_NONE,
.range_start = 0,
.range_end = LLONG_MAX,
@@ -680,7 +680,7 @@ void sync_inodes_sb(struct super_block *sb, int wait)
} else
wbc.nr_to_write = LONG_MAX; /* doesn't actually matter */
- sync_sb_inodes(sb, &wbc);
+ sync_sb_inodes(&wbc);
}
/**
diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index eaf6d89..0f680b9 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -66,12 +66,13 @@ static int shrink_liability(struct ubifs_info *c, int nr_to_write)
{
int nr_written;
struct writeback_control wbc = {
+ .sb = c->vfs_sb,
.sync_mode = WB_SYNC_NONE,
.range_end = LLONG_MAX,
.nr_to_write = nr_to_write,
};
- generic_sync_sb_inodes(c->vfs_sb, &wbc);
+ generic_sync_sb_inodes(&wbc);
nr_written = nr_to_write - wbc.nr_to_write;
if (!nr_written) {
@@ -83,7 +84,7 @@ static int shrink_liability(struct ubifs_info *c, int nr_to_write)
wbc.sync_mode = WB_SYNC_ALL;
wbc.range_end = LLONG_MAX;
wbc.nr_to_write = nr_to_write;
- generic_sync_sb_inodes(c->vfs_sb, &wbc);
+ generic_sync_sb_inodes(&wbc);
nr_written = nr_to_write - wbc.nr_to_write;
}
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 26d2e0d..06e80e3 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -439,6 +439,7 @@ static int ubifs_sync_fs(struct super_block *sb, int wait)
int i, err;
struct ubifs_info *c = sb->s_fs_info;
struct writeback_control wbc = {
+ .sb = sb,
.sync_mode = WB_SYNC_ALL,
.range_start = 0,
.range_end = LLONG_MAX,
@@ -462,7 +463,7 @@ static int ubifs_sync_fs(struct super_block *sb, int wait)
* the user be able to get more accurate results of 'statfs()' after
* they synchronize the file system.
*/
- generic_sync_sb_inodes(sb, &wbc);
+ generic_sync_sb_inodes(&wbc);
/*
* Synchronize write buffers, because 'ubifs_run_commit()' does not
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 73e9b64..b0da459 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2070,8 +2070,7 @@ static inline void invalidate_remote_inode(struct inode *inode)
extern int invalidate_inode_pages2(struct address_space *mapping);
extern int invalidate_inode_pages2_range(struct address_space *mapping,
pgoff_t start, pgoff_t end);
-extern void generic_sync_sb_inodes(struct super_block *sb,
- struct writeback_control *wbc);
+extern void generic_sync_sb_inodes(struct writeback_control *wbc);
extern int write_inode_now(struct inode *, int);
extern int filemap_fdatawrite(struct address_space *);
extern int filemap_flush(struct address_space *);
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 3224820..5b4ceef 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -40,6 +40,8 @@ enum writeback_sync_modes {
struct writeback_control {
struct backing_dev_info *bdi; /* If !NULL, only write back this
queue */
+ struct super_block *sb; /* if !NULL, only write inodes from
+ this super_block */
enum writeback_sync_modes sync_mode;
unsigned long *older_than_this; /* If !NULL, only write back inodes
older than this */
--
1.6.4.1.207.g68ea
--
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