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ext4: let ext4 maintain extent status tree

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This patch lets ext4 maintain extent status tree.

Currently it only tracks delay extent status in extent status tree.  When a
delay allocation is issued, the related delay extent will be inserted into
extent status tree.  When a delay extent is written out or invalidated, it will
be removed from this tree.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: Allison Henderson <achender@linux.vnet.ibm.com>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Zheng Liu
2012-11-08 21:57:32 -05:00
committed by Theodore Ts'o
parent 9a26b66175
commit 51865fda28
4 changed files with 51 additions and 4 deletions
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12
fs/ext4/super.c
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@@ -50,6 +50,7 @@
#include "xattr.h"
#include "acl.h"
#include "mballoc.h"
#include "ext4_extents.h"
#define CREATE_TRACE_POINTS
#include <trace/events/ext4.h>
@@ -1033,6 +1034,7 @@ void ext4_clear_inode(struct inode *inode)
clear_inode(inode);
dquot_drop(inode);
ext4_discard_preallocations(inode);
ext4_es_remove_extent(inode, 0, EXT_MAX_BLOCKS);
if (EXT4_I(inode)->jinode) {
jbd2_journal_release_jbd_inode(EXT4_JOURNAL(inode),
EXT4_I(inode)->jinode);
@@ -5296,9 +5298,14 @@ static int __init ext4_init_fs(void)
init_waitqueue_head(&ext4__ioend_wq[i]);
}
err = ext4_init_pageio();
err = ext4_init_es();
if (err)
return err;
err = ext4_init_pageio();
if (err)
goto out7;
err = ext4_init_system_zone();
if (err)
goto out6;
@@ -5348,6 +5355,9 @@ out5:
ext4_exit_system_zone();
out6:
ext4_exit_pageio();
out7:
ext4_exit_es();
return err;
}