Removes inode.i_dirty_data_buffers. It's no longer used - all dirty
buffers have their pages marked dirty and filemap_fdatasync() /
filemap_fdatawait() catches it all.
Updates all callers.
There's a problem with JFS - it was performing buffer-based
writeback with pages locked, so it deadlocks. My attempt
to fix that (by not locking metapage pages) has been sent
to the JFS list for confirmation.
=====================================
--- 2.5.9/fs/buffer.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/buffer.c Wed Apr 24 01:44:54 2002
@@ -434,8 +434,7 @@ int inode_has_buffers(struct inode *inod
int ret;
spin_lock(&inode->i_bufferlist_lock);
- ret = !list_empty(&inode->i_dirty_buffers) ||
- !list_empty(&inode->i_dirty_data_buffers);
+ ret = !list_empty(&inode->i_dirty_buffers);
spin_unlock(&inode->i_bufferlist_lock);
return ret;
@@ -697,9 +696,6 @@ void invalidate_inode_buffers(struct ino
while ((entry = inode->i_dirty_buffers.next) !=
&inode->i_dirty_buffers)
__remove_inode_queue(BH_ENTRY(entry));
- while ((entry = inode->i_dirty_data_buffers.next) !=
- &inode->i_dirty_data_buffers)
- __remove_inode_queue(BH_ENTRY(entry));
spin_unlock(&inode->i_bufferlist_lock);
}
@@ -957,10 +953,6 @@ __getblk(struct block_device *bdev, sect
* discover all the uptodate buffers, will set the page uptodate
* and will perform no I/O.
*/
-static inline void __mark_dirty(struct buffer_head *bh)
-{
- __set_page_dirty_nobuffers(bh->b_page);
-}
/**
* mark_buffer_dirty - mark a buffer_head as needing writeout
@@ -976,7 +968,7 @@ static inline void __mark_dirty(struct b
void mark_buffer_dirty(struct buffer_head *bh)
{
if (!atomic_set_buffer_dirty(bh))
- __mark_dirty(bh);
+ __set_page_dirty_nobuffers(bh->b_page);
}
/*
@@ -1503,10 +1495,7 @@ static int __block_commit_write(struct i
partial = 1;
} else {
mark_buffer_uptodate(bh, 1);
- if (!atomic_set_buffer_dirty(bh)) {
- __mark_dirty(bh);
- buffer_insert_inode_data_queue(bh, inode);
- }
+ mark_buffer_dirty(bh);
}
}
--- 2.5.9/fs/inode.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/inode.c Wed Apr 24 01:06:12 2002
@@ -143,7 +143,6 @@ void inode_init_once(struct inode *inode
INIT_LIST_HEAD(&inode->i_data.io_pages);
INIT_LIST_HEAD(&inode->i_dentry);
INIT_LIST_HEAD(&inode->i_dirty_buffers);
- INIT_LIST_HEAD(&inode->i_dirty_data_buffers);
INIT_LIST_HEAD(&inode->i_devices);
sema_init(&inode->i_sem, 1);
INIT_RADIX_TREE(&inode->i_data.page_tree, GFP_ATOMIC);
--- 2.5.9/include/linux/fs.h~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/include/linux/fs.h Wed Apr 24 01:44:54 2002
@@ -434,7 +434,6 @@ struct inode {
struct list_head i_dentry;
struct list_head i_dirty_buffers; /* uses i_bufferlist_lock */
- struct list_head i_dirty_data_buffers;
spinlock_t i_bufferlist_lock;
unsigned long i_ino;
@@ -1260,13 +1259,6 @@ buffer_insert_inode_queue(struct buffer_
bh, &inode->i_dirty_buffers);
}
-static inline void
-buffer_insert_inode_data_queue(struct buffer_head *bh, struct inode *inode)
-{
- buffer_insert_list(&inode->i_bufferlist_lock,
- bh, &inode->i_dirty_data_buffers);
-}
-
#define atomic_set_buffer_dirty(bh) test_and_set_bit(BH_Dirty, &(bh)->b_state)
static inline void mark_buffer_async(struct buffer_head * bh, int on)
@@ -1335,11 +1327,6 @@ static inline int fsync_inode_buffers(st
return fsync_buffers_list(&inode->i_bufferlist_lock,
&inode->i_dirty_buffers);
}
-static inline int fsync_inode_data_buffers(struct inode *inode)
-{
- return fsync_buffers_list(&inode->i_bufferlist_lock,
- &inode->i_dirty_data_buffers);
-}
extern int inode_has_buffers(struct inode *);
extern int filemap_fdatasync(struct address_space *);
extern int filemap_fdatawait(struct address_space *);
--- 2.5.9/fs/ext2/fsync.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/ext2/fsync.c Wed Apr 24 01:06:12 2002
@@ -38,7 +38,6 @@ int ext2_sync_file(struct file * file, s
int err;
err = fsync_inode_buffers(inode);
- err |= fsync_inode_data_buffers(inode);
if (!(inode->i_state & I_DIRTY))
return err;
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
--- 2.5.9/fs/ext3/fsync.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/ext3/fsync.c Wed Apr 24 01:06:12 2002
@@ -62,8 +62,6 @@ int ext3_sync_file(struct file * file, s
* we'll end up waiting on them in commit.
*/
ret = fsync_inode_buffers(inode);
- ret |= fsync_inode_data_buffers(inode);
-
ext3_force_commit(inode->i_sb);
return ret;
--- 2.5.9/fs/jfs/file.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/jfs/file.c Wed Apr 24 01:06:12 2002
@@ -33,8 +33,6 @@ int jfs_fsync(struct file *file, struct
struct inode *inode = dentry->d_inode;
int rc = 0;
- rc = fsync_inode_data_buffers(inode);
-
if (!(inode->i_state & I_DIRTY))
return rc;
if (datasync || !(inode->i_state & I_DIRTY_DATASYNC))
--- 2.5.9/fs/jfs/jfs_dmap.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/jfs/jfs_dmap.c Wed Apr 24 01:06:12 2002
@@ -325,7 +325,8 @@ int dbSync(struct inode *ipbmap)
/*
* write out dirty pages of bmap
*/
- fsync_inode_data_buffers(ipbmap);
+ filemap_fdatasync(ipbmap->i_mapping);
+ filemap_fdatawait(ipbmap->i_mapping);
ipbmap->i_state |= I_DIRTY;
diWriteSpecial(ipbmap);
--- 2.5.9/fs/jfs/jfs_imap.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/jfs/jfs_imap.c Wed Apr 24 01:06:12 2002
@@ -282,7 +282,8 @@ int diSync(struct inode *ipimap)
/*
* write out dirty pages of imap
*/
- fsync_inode_data_buffers(ipimap);
+ filemap_fdatasync(ipimap->i_mapping);
+ filemap_fdatawait(ipimap->i_mapping);
diWriteSpecial(ipimap);
@@ -607,7 +608,8 @@ void diFreeSpecial(struct inode *ip)
jERROR(1, ("diFreeSpecial called with NULL ip!\n"));
return;
}
- fsync_inode_data_buffers(ip);
+ filemap_fdatasync(ip->i_mapping);
+ filemap_fdatawait(ip->i_mapping);
truncate_inode_pages(ip->i_mapping, 0);
iput(ip);
}
--- 2.5.9/fs/jfs/jfs_logmgr.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/jfs/jfs_logmgr.c Wed Apr 24 01:06:12 2002
@@ -966,9 +966,21 @@ int lmLogSync(log_t * log, int nosyncwai
* We need to make sure all of the "written" metapages
* actually make it to disk
*/
- fsync_inode_data_buffers(sbi->ipbmap);
- fsync_inode_data_buffers(sbi->ipimap);
- fsync_inode_data_buffers(sbi->direct_inode);
+ /*
+ * NOTE! It's more efficient to perform the three
+ * fdatasyncs and then the three fdatawaits, rather
+ * than sync/wait/sync/wait/sync/wait. If there are
+ * no ordering requirements here, then it's recommended.
+ * akpm@zip.com.zu
+ */
+ filemap_fdatasync(sbi->ipbmap->i_mapping);
+ filemap_fdatawait(sbi->ipbmap->i_mapping);
+
+ filemap_fdatasync(sbi->ipimap->i_mapping);
+ filemap_fdatawait(sbi->ipimap->i_mapping);
+
+ filemap_fdatasync(sbi->direct_inode->i_mapping);
+ filemap_fdatawait(sbi->direct_inode->i_mapping);
lrd.logtid = 0;
lrd.backchain = 0;
--- 2.5.9/fs/jfs/jfs_txnmgr.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/jfs/jfs_txnmgr.c Wed Apr 24 01:06:12 2002
@@ -1163,8 +1163,10 @@ int txCommit(tid_t tid, /* transaction
* committing transactions and use i_sem instead.
*/
if ((!S_ISDIR(ip->i_mode))
- && (tblk->flag & COMMIT_DELETE) == 0)
- fsync_inode_data_buffers(ip);
+ && (tblk->flag & COMMIT_DELETE) == 0) {
+ filemap_fdatasync(ip->i_mapping);
+ filemap_fdatawait(ip->i_mapping);
+ }
/*
* Mark inode as not dirty. It will still be on the dirty
--- 2.5.9/fs/jfs/super.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/jfs/super.c Wed Apr 24 01:06:12 2002
@@ -151,7 +151,12 @@ static void jfs_put_super(struct super_b
* We need to clean out the direct_inode pages since this inode
* is not in the inode hash.
*/
- fsync_inode_data_buffers(sbi->direct_inode);
+ /*
+ * Is this right? Should we writeback sbi->direct_mapping instead?
+ * - akpm@zip.com.au
+ */
+ filemap_fdatasync(sbi->direct_inode->i_mapping);
+ filemap_fdatawait(sbi->direct_inode->i_mapping);
truncate_inode_pages(sbi->direct_mapping, 0);
iput(sbi->direct_inode);
sbi->direct_inode = NULL;
@@ -337,7 +342,8 @@ out_no_rw:
jERROR(1, ("jfs_umount failed with return code %d\n", rc));
}
out_mount_failed:
- fsync_inode_data_buffers(sbi->direct_inode);
+ filemap_fdatasync(sbi->direct_inode->i_mapping);
+ filemap_fdatawait(sbi->direct_inode->i_mapping);
truncate_inode_pages(sbi->direct_mapping, 0);
make_bad_inode(sbi->direct_inode);
iput(sbi->direct_inode);
--- 2.5.9/fs/minix/file.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/minix/file.c Wed Apr 24 01:06:12 2002
@@ -32,7 +32,6 @@ int minix_sync_file(struct file * file,
int err;
err = fsync_inode_buffers(inode);
- err |= fsync_inode_data_buffers(inode);
if (!(inode->i_state & I_DIRTY))
return err;
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
--- 2.5.9/fs/reiserfs/file.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/reiserfs/file.c Wed Apr 24 01:06:12 2002
@@ -86,7 +86,6 @@ static int reiserfs_sync_file(
BUG ();
n_err = fsync_inode_buffers(p_s_inode) ;
- n_err |= fsync_inode_data_buffers(p_s_inode);
reiserfs_commit_for_inode(p_s_inode) ;
unlock_kernel() ;
return ( n_err < 0 ) ? -EIO : 0;
--- 2.5.9/fs/sysv/file.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/sysv/file.c Wed Apr 24 01:06:12 2002
@@ -38,7 +38,6 @@ int sysv_sync_file(struct file * file, s
int err;
err = fsync_inode_buffers(inode);
- err |= fsync_inode_data_buffers(inode);
if (!(inode->i_state & I_DIRTY))
return err;
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
--- 2.5.9/fs/udf/fsync.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/udf/fsync.c Wed Apr 24 01:06:12 2002
@@ -45,7 +45,6 @@ int udf_fsync_inode(struct inode *inode,
int err;
err = fsync_inode_buffers(inode);
- err |= fsync_inode_data_buffers(inode);
if (!(inode->i_state & I_DIRTY))
return err;
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
--- 2.5.9/mm/filemap.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/mm/filemap.c Wed Apr 24 01:06:12 2002
@@ -1089,8 +1089,6 @@ static ssize_t generic_file_direct_IO(in
*/
retval = filemap_fdatasync(mapping);
if (retval == 0)
- retval = fsync_inode_data_buffers(inode);
- if (retval == 0)
retval = filemap_fdatawait(mapping);
if (retval < 0)
goto out_free;
--- 2.5.9/fs/jfs/jfs_metapage.c~cleanup-040-i_dirty_data_buffers Wed Apr 24 01:06:12 2002
+++ 2.5.9-akpm/fs/jfs/jfs_metapage.c Wed Apr 24 01:44:52 2002
@@ -349,6 +349,9 @@ metapage_t *__get_metapage(struct inode
page_index = lblock >> l2BlocksPerPage;
page_offset = (lblock - (page_index << l2BlocksPerPage)) <<
l2bsize;
+ /*
+ * AKPM: s/PAGE_SIZE/PAGE_CACHE_SIZE/ ?
+ */
if ((page_offset + size) > PAGE_SIZE) {
spin_unlock(&meta_lock);
jERROR(1, ("MetaData crosses page boundary!!\n"));
@@ -394,8 +397,10 @@ metapage_t *__get_metapage(struct inode
__free_metapage(mp);
spin_unlock(&meta_lock);
return NULL;
- } else
+ } else {
INCREMENT(mpStat.pagealloc);
+ unlock_page(mp->page);
+ }
} else {
jFYI(1,
("__get_metapage: Calling read_cache_page\n"));
@@ -412,7 +417,6 @@ metapage_t *__get_metapage(struct inode
return NULL;
} else
INCREMENT(mpStat.pagealloc);
- lock_page(mp->page);
}
mp->data = (void *) (kmap(mp->page) + page_offset);
}
@@ -459,6 +463,7 @@ static void __write_metapage(metapage_t
page_offset =
(mp->index - (page_index << l2BlocksPerPage)) << l2bsize;
+ lock_page(mp->page);
rc = mp->mapping->a_ops->prepare_write(NULL, mp->page, page_offset,
page_offset +
mp->logical_size);
@@ -466,6 +471,7 @@ static void __write_metapage(metapage_t
jERROR(1, ("prepare_write return %d!\n", rc));
ClearPageUptodate(mp->page);
kunmap(mp->page);
+ unlock_page(mp->page);
clear_bit(META_dirty, &mp->flag);
return;
}
@@ -476,6 +482,7 @@ static void __write_metapage(metapage_t
jERROR(1, ("commit_write returned %d\n", rc));
}
+ unlock_page(mp->page);
clear_bit(META_dirty, &mp->flag);
jFYI(1, ("__write_metapage done\n"));
@@ -525,7 +532,6 @@ void release_metapage(metapage_t * mp)
mp->data = 0;
if (test_bit(META_dirty, &mp->flag))
__write_metapage(mp);
- unlock_page(mp->page);
if (test_bit(META_sync, &mp->flag)) {
sync_metapage(mp);
clear_bit(META_sync, &mp->flag);
@@ -585,7 +591,9 @@ void invalidate_metapages(struct inode *
/*
* If in the metapage cache, we've got the page locked
*/
+ lock_page(mp->page);
block_flushpage(mp->page, 0);
+ unlock_page(mp->page);
} else {
spin_unlock(&meta_lock);
page = find_lock_page(mapping, lblock>>l2BlocksPerPage);
@@ -608,7 +616,6 @@ void invalidate_inode_metapages(struct i
clear_bit(META_dirty, &mp->flag);
set_bit(META_discard, &mp->flag);
kunmap(mp->page);
- unlock_page(mp->page);
page_cache_release(mp->page);
INCREMENT(mpStat.pagefree);
mp->data = 0;
-
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This archive was generated by hypermail 2b29 : Tue Apr 30 2002 - 22:00:08 EST