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Merge branch 'ext3-latency-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

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* 'ext3-latency-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext3: Add replace-on-rename hueristics for data=writeback mode
  ext3: Add replace-on-truncate hueristics for data=writeback mode
  ext3: Use WRITE_SYNC for commits which are caused by fsync()
  block_write_full_page: Use synchronous writes for WBC_SYNC_ALL writebacks
This commit is contained in:
Linus Torvalds
2009-04-03 11:10:33 -07:00
parent 18b34b9546 e7c8f5079e
commit 20bec8ab14
8 changed files with 38 additions and 11 deletions
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4
fs/ext3/file.c
View File

@@ -33,6 +33,10 @@
*/
static int ext3_release_file (struct inode * inode, struct file * filp)
{
if (EXT3_I(inode)->i_state & EXT3_STATE_FLUSH_ON_CLOSE) {
filemap_flush(inode->i_mapping);
EXT3_I(inode)->i_state &= ~EXT3_STATE_FLUSH_ON_CLOSE;
}
/* if we are the last writer on the inode, drop the block reservation */
if ((filp->f_mode & FMODE_WRITE) &&
(atomic_read(&inode->i_writecount) == 1))

3
fs/ext3/inode.c
View File

@@ -2363,6 +2363,9 @@ void ext3_truncate(struct inode *inode)
if (!ext3_can_truncate(inode))
return;
if (inode->i_size == 0 && ext3_should_writeback_data(inode))
ei->i_state |= EXT3_STATE_FLUSH_ON_CLOSE;
/*
* We have to lock the EOF page here, because lock_page() nests
* outside journal_start().

6
fs/ext3/namei.c
View File

@@ -2274,7 +2274,7 @@ static int ext3_rename (struct inode * old_dir, struct dentry *old_dentry,
struct inode * old_inode, * new_inode;
struct buffer_head * old_bh, * new_bh, * dir_bh;
struct ext3_dir_entry_2 * old_de, * new_de;
int retval;
int retval, flush_file = 0;
old_bh = new_bh = dir_bh = NULL;
@@ -2410,6 +2410,8 @@ static int ext3_rename (struct inode * old_dir, struct dentry *old_dentry,
ext3_mark_inode_dirty(handle, new_inode);
if (!new_inode->i_nlink)
ext3_orphan_add(handle, new_inode);
if (ext3_should_writeback_data(new_inode))
flush_file = 1;
}
retval = 0;
@@ -2418,6 +2420,8 @@ end_rename:
brelse (old_bh);
brelse (new_bh);
ext3_journal_stop(handle);
if (retval == 0 && flush_file)
filemap_flush(old_inode->i_mapping);
return retval;
}