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Message-Id: <1358084571-3042-1-git-send-email-tytso@mit.edu>
Date: Sun, 13 Jan 2013 08:42:51 -0500
From: Theodore Ts'o <tytso@....edu>
To: Ext4 Developers List <linux-ext4@...r.kernel.org>
Cc: esandeen@...hat.com, Theodore Ts'o <tytso@....edu>
Subject: [PATCH] ext4: trigger the lazy inode table initialization after resize
After we have finished extending the file system, we need to trigger a
the lazy inode table thread to zero out the inode tables.
Signed-off-by: "Theodore Ts'o" <tytso@....edu>
---
fs/ext4/ext4.h | 2 ++
fs/ext4/ioctl.c | 9 +++++++++
fs/ext4/resize.c | 8 +++++---
fs/ext4/super.c | 21 +++++++++++----------
4 files changed, 27 insertions(+), 13 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 8462eb3..8024623 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2227,6 +2227,8 @@ extern int ext4_group_desc_csum_verify(struct super_block *sb, __u32 group,
struct ext4_group_desc *gdp);
extern void ext4_group_desc_csum_set(struct super_block *sb, __u32 group,
struct ext4_group_desc *gdp);
+extern int ext4_register_li_request(struct super_block *sb,
+ ext4_group_t first_not_zeroed);
static inline int ext4_has_group_desc_csum(struct super_block *sb)
{
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 5747f52..4784ac2 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -313,6 +313,9 @@ mext_out:
if (err == 0)
err = err2;
mnt_drop_write_file(filp);
+ if (!err && ext4_has_group_desc_csum(sb) &&
+ test_opt(sb, INIT_INODE_TABLE))
+ err = ext4_register_li_request(sb, input.group);
group_add_out:
ext4_resize_end(sb);
return err;
@@ -358,6 +361,7 @@ group_add_out:
ext4_fsblk_t n_blocks_count;
struct super_block *sb = inode->i_sb;
int err = 0, err2 = 0;
+ ext4_group_t o_group = EXT4_SB(sb)->s_groups_count;
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
@@ -388,6 +392,11 @@ group_add_out:
if (err == 0)
err = err2;
mnt_drop_write_file(filp);
+ if (!err && (o_group > EXT4_SB(sb)->s_groups_count) &&
+ ext4_has_group_desc_csum(sb) &&
+ test_opt(sb, INIT_INODE_TABLE))
+ err = ext4_register_li_request(sb, o_group);
+
resizefs_out:
ext4_resize_end(sb);
return err;
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 05f8d45..8eefb63 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1506,10 +1506,12 @@ static int ext4_setup_next_flex_gd(struct super_block *sb,
group_data[i].blocks_count = blocks_per_group;
overhead = ext4_group_overhead_blocks(sb, group + i);
group_data[i].free_blocks_count = blocks_per_group - overhead;
- if (ext4_has_group_desc_csum(sb))
+ if (ext4_has_group_desc_csum(sb)) {
flex_gd->bg_flags[i] = EXT4_BG_BLOCK_UNINIT |
EXT4_BG_INODE_UNINIT;
- else
+ if (!test_opt(sb, INIT_INODE_TABLE))
+ flex_gd->bg_flags[i] |= EXT4_BG_INODE_ZEROED;
+ } else
flex_gd->bg_flags[i] = EXT4_BG_INODE_ZEROED;
}
@@ -1594,7 +1596,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
err = ext4_alloc_flex_bg_array(sb, input->group + 1);
if (err)
- return err;
+ goto out;
err = ext4_mb_alloc_groupinfo(sb, input->group + 1);
if (err)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 3d4fb81..c014edd 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2776,7 +2776,7 @@ static int ext4_run_li_request(struct ext4_li_request *elr)
break;
}
- if (group == ngroups)
+ if (group >= ngroups)
ret = 1;
if (!ret) {
@@ -3016,33 +3016,34 @@ static struct ext4_li_request *ext4_li_request_new(struct super_block *sb,
return elr;
}
-static int ext4_register_li_request(struct super_block *sb,
- ext4_group_t first_not_zeroed)
+int ext4_register_li_request(struct super_block *sb,
+ ext4_group_t first_not_zeroed)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
- struct ext4_li_request *elr;
+ struct ext4_li_request *elr = NULL;
ext4_group_t ngroups = EXT4_SB(sb)->s_groups_count;
int ret = 0;
+ mutex_lock(&ext4_li_mtx);
if (sbi->s_li_request != NULL) {
/*
* Reset timeout so it can be computed again, because
* s_li_wait_mult might have changed.
*/
sbi->s_li_request->lr_timeout = 0;
- return 0;
+ goto out;
}
if (first_not_zeroed == ngroups ||
(sb->s_flags & MS_RDONLY) ||
!test_opt(sb, INIT_INODE_TABLE))
- return 0;
+ goto out;
elr = ext4_li_request_new(sb, first_not_zeroed);
- if (!elr)
- return -ENOMEM;
-
- mutex_lock(&ext4_li_mtx);
+ if (!elr) {
+ ret = -ENOMEM;
+ goto out;
+ }
if (NULL == ext4_li_info) {
ret = ext4_li_info_new();
--
1.7.12.rc0.22.gcdd159b
--
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