| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <BANLkTimTK+E3p3RF2Y_7BUeG1+f7wgKEgw@mail.gmail.com>
Date: Sun, 24 Apr 2011 17:19:38 -0700
From: Manish Katiyar <mkatiyar@...il.com>
To: ext4 <linux-ext4@...r.kernel.org>
Cc: Manish Katiyar <manish.katiyar@...ibm.com>,
Jan Kara <jack@...e.cz>, "Theodore Ts'o" <tytso@....edu>
Subject: [PATCH 5/5] ext4 : Update ext4 routines to call ext4_journal_start_tryhard()
if the transaction allocation isn't supposed to fail.
Update ext4 routines to call ext4_journal_start_tryhard() if the
transaction allocation isn't supposed to fail. When ext4_journal_start_tryhard
is called, allocation is done with GFP_NOFS flags instead of
GFP_KERNEL.
Signed-off-by: Manish Katiyar <mkatiyar@...il.com>
---
fs/ext4/extents.c | 6 +++---
fs/ext4/ialloc.c | 2 +-
fs/ext4/inode.c | 27 ++++++++++++++++-----------
fs/ext4/super.c | 8 ++++----
4 files changed, 24 insertions(+), 19 deletions(-)
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 4890d6f..bf0bb9c 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -2337,7 +2337,7 @@ static int ext4_ext_remove_space(struct inode
*inode, ext4_lblk_t start)
ext_debug("truncate since %u\n", start);
/* probably first extent we're gonna free will be last in block */
- handle = ext4_journal_start(inode, depth + 1);
+ handle = ext4_journal_start_tryhard(inode, depth + 1);
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -3550,7 +3550,7 @@ void ext4_ext_truncate(struct inode *inode)
* probably first extent we're gonna free will be last in block
*/
err = ext4_writepage_trans_blocks(inode);
- handle = ext4_journal_start(inode, err);
+ handle = ext4_journal_start_tryhard(inode, err);
if (IS_ERR(handle))
return;
@@ -3762,7 +3762,7 @@ int ext4_convert_unwritten_extents(struct inode
*inode, loff_t offset,
while (ret >= 0 && ret < max_blocks) {
map.m_lblk += ret;
map.m_len = (max_blocks -= ret);
- handle = ext4_journal_start(inode, credits);
+ handle = ext4_journal_start_tryhard(inode, credits);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
break;
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 21bb2f6..40902f3 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -1263,7 +1263,7 @@ extern int ext4_init_inode_table(struct
super_block *sb, ext4_group_t group,
if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_ZEROED))
goto out;
- handle = ext4_journal_start_sb(sb, 1);
+ handle = ext4_journal_start_sb_tryhard(sb, 1);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
goto out;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index f2fa5e8..0c2b693 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -129,7 +129,7 @@ static handle_t *start_transaction(struct inode *inode)
{
handle_t *result;
- result = ext4_journal_start(inode, blocks_for_truncate(inode));
+ result = ext4_journal_start_tryhard(inode, blocks_for_truncate(inode));
if (!IS_ERR(result))
return result;
@@ -204,7 +204,8 @@ void ext4_evict_inode(struct inode *inode)
if (is_bad_inode(inode))
goto no_delete;
- handle = ext4_journal_start(inode, blocks_for_truncate(inode)+3);
+ handle = ext4_journal_start_tryhard(inode,
+ blocks_for_truncate(inode)+3);
if (IS_ERR(handle)) {
ext4_std_error(inode->i_sb, PTR_ERR(handle));
/*
@@ -1401,7 +1402,7 @@ static int _ext4_get_block(struct inode *inode,
sector_t iblock,
if (map.m_len > DIO_MAX_BLOCKS)
map.m_len = DIO_MAX_BLOCKS;
dio_credits = ext4_chunk_trans_blocks(inode, map.m_len);
- handle = ext4_journal_start(inode, dio_credits);
+ handle = ext4_journal_start_tryhard(inode, dio_credits);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
return ret;
@@ -2558,7 +2559,8 @@ static int __ext4_journalled_writepage(struct page *page,
* references to buffers so we are safe */
unlock_page(page);
- handle = ext4_journal_start(inode, ext4_writepage_trans_blocks(inode));
+ handle = ext4_journal_start_tryhard(inode,
+ ext4_writepage_trans_blocks(inode));
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
goto out;
@@ -2990,7 +2992,7 @@ retry:
needed_blocks = ext4_da_writepages_trans_blocks(inode);
/* start a new transaction*/
- handle = ext4_journal_start(inode, needed_blocks);
+ handle = ext4_journal_start_tryhard(inode, needed_blocks);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
ext4_msg(inode->i_sb, KERN_CRIT, "%s: jbd2_start: "
@@ -5279,8 +5281,9 @@ int ext4_setattr(struct dentry *dentry, struct
iattr *attr)
/* (user+group)*(old+new) structure, inode write (sb,
* inode block, ? - but truncate inode update has it) */
- handle = ext4_journal_start(inode, (EXT4_MAXQUOTAS_INIT_BLOCKS(inode->i_sb)+
- EXT4_MAXQUOTAS_DEL_BLOCKS(inode->i_sb))+3);
+ handle = ext4_journal_start(inode,
+ (EXT4_MAXQUOTAS_INIT_BLOCKS(inode->i_sb)+
+ EXT4_MAXQUOTAS_DEL_BLOCKS(inode->i_sb))+3);
if (IS_ERR(handle)) {
error = PTR_ERR(handle);
goto err_out;
@@ -5335,7 +5338,7 @@ int ext4_setattr(struct dentry *dentry, struct
iattr *attr)
attr->ia_size);
if (error) {
/* Do as much error cleanup as possible */
- handle = ext4_journal_start(inode, 3);
+ handle = ext4_journal_start_tryhard(inode, 3);
if (IS_ERR(handle)) {
ext4_orphan_del(NULL, inode);
goto err_out;
@@ -5371,7 +5374,9 @@ int ext4_setattr(struct dentry *dentry, struct
iattr *attr)
rc = ext4_acl_chmod(inode);
err_out:
- ext4_std_error(inode->i_sb, error);
+ if (error != -ENOMEM) {
+ ext4_std_error(inode->i_sb, error);
+ }
if (!error)
error = rc;
return error;
@@ -5687,7 +5692,7 @@ void ext4_dirty_inode(struct inode *inode)
{
handle_t *handle;
- handle = ext4_journal_start(inode, 2);
+ handle = ext4_journal_start_tryhard(inode, 2);
if (IS_ERR(handle))
goto out;
@@ -5771,7 +5776,7 @@ int ext4_change_inode_journal_flag(struct inode
*inode, int val)
/* Finally we can mark the inode as dirty. */
- handle = ext4_journal_start(inode, 1);
+ handle = ext4_journal_start_tryhard(inode, 1);
if (IS_ERR(handle))
return PTR_ERR(handle);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 03eac6a..b0fc83e 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4526,7 +4526,7 @@ static int ext4_write_dquot(struct dquot *dquot)
struct inode *inode;
inode = dquot_to_inode(dquot);
- handle = ext4_journal_start(inode,
+ handle = ext4_journal_start_tryhard(inode,
EXT4_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -4542,7 +4542,7 @@ static int ext4_acquire_dquot(struct dquot *dquot)
int ret, err;
handle_t *handle;
- handle = ext4_journal_start(dquot_to_inode(dquot),
+ handle = ext4_journal_start_tryhard(dquot_to_inode(dquot),
EXT4_QUOTA_INIT_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -4558,7 +4558,7 @@ static int ext4_release_dquot(struct dquot *dquot)
int ret, err;
handle_t *handle;
- handle = ext4_journal_start(dquot_to_inode(dquot),
+ handle = ext4_journal_start_tryhard(dquot_to_inode(dquot),
EXT4_QUOTA_DEL_BLOCKS(dquot->dq_sb));
if (IS_ERR(handle)) {
/* Release dquot anyway to avoid endless cycle in dqput() */
@@ -4590,7 +4590,7 @@ static int ext4_write_info(struct super_block
*sb, int type)
handle_t *handle;
/* Data block + inode block */
- handle = ext4_journal_start(sb->s_root->d_inode, 2);
+ handle = ext4_journal_start_tryhard(sb->s_root->d_inode, 2);
if (IS_ERR(handle))
return PTR_ERR(handle);
ret = dquot_commit_info(sb, type);
--
1.7.1
--
Thanks -
Manish
View attachment "0005-Update-ext4-routines-to-call-ext4_journal_start_tryh.patch" of type "text/x-patch" (7273 bytes)
Powered by blists - more mailing lists