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[kernel] generic-2.6/2.6.30: mini_fo fixes

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15991 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2009-05-22 13:53:03 +00:00
parent 6fc7a5463c
commit 95ec909393
1 changed files with 122 additions and 0 deletions
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122
target/linux/generic-2.6/patches-2.6.30/215-mini_fo_2.6.30.patch Normal file
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@ -0,0 +1,122 @@
--- a/fs/mini_fo/aux.c
+++ b/fs/mini_fo/aux.c
@@ -86,8 +86,10 @@ int get_neg_sto_dentry(dentry_t *dentry)
len = dentry->d_name.len;
name = dentry->d_name.name;
+ mutex_lock(&dtohd2(dentry->d_parent)->d_inode->i_mutex);
dtohd2(dentry) =
lookup_one_len(name, dtohd2(dentry->d_parent), len);
+ mutex_unlock(&dtohd2(dentry->d_parent)->d_inode->i_mutex);
out:
return err;
@@ -426,7 +428,9 @@ int build_sto_structure(dentry_t *dir, d
const unsigned char *name;
len = dtohd(dentry)->d_name.len;
name = dtohd(dentry)->d_name.name;
+ mutex_lock(&dtohd2(dir)->d_inode->i_mutex);
hidden_sto_dentry = lookup_one_len(name, dtohd2(dir), len);
+ mutex_unlock(&dtohd2(dir)->d_inode->i_mutex);
dtohd2(dentry) = hidden_sto_dentry;
}
--- a/fs/mini_fo/inode.c
+++ b/fs/mini_fo/inode.c
@@ -113,17 +113,23 @@ mini_fo_lookup(inode_t *dir, dentry_t *d
hidden_dir_dentry = hidden_dentry->d_parent;
kfree(bpath);
}
- else if(hidden_dir_dentry && hidden_dir_dentry->d_inode)
+ else if(hidden_dir_dentry && hidden_dir_dentry->d_inode) {
+ mutex_lock(&hidden_dir_dentry->d_inode->i_mutex);
hidden_dentry =
lookup_one_len(name, hidden_dir_dentry, namelen);
- else
+ mutex_unlock(&hidden_dir_dentry->d_inode->i_mutex);
+ } else {
hidden_dentry = NULL;
+ }
- if(hidden_sto_dir_dentry && hidden_sto_dir_dentry->d_inode)
+ if(hidden_sto_dir_dentry && hidden_sto_dir_dentry->d_inode) {
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
hidden_sto_dentry =
lookup_one_len(name, hidden_sto_dir_dentry, namelen);
- else
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+ } else {
hidden_sto_dentry = NULL;
+ }
/* catch error in lookup */
if (IS_ERR(hidden_dentry) || IS_ERR(hidden_sto_dentry)) {
--- a/fs/mini_fo/meta.c
+++ b/fs/mini_fo/meta.c
@@ -43,9 +43,11 @@ int meta_build_lists(dentry_t *dentry)
/* might there be a META-file? */
if(dtohd2(dentry) && dtohd2(dentry)->d_inode) {
+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
meta_dentry = lookup_one_len(META_FILENAME,
dtohd2(dentry),
strlen(META_FILENAME));
+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
if(!meta_dentry->d_inode) {
dput(meta_dentry);
goto out_ok;
@@ -426,8 +428,11 @@ int meta_write_d_entry(dentry_t *dentry,
goto out;
}
}
+
+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
meta_dentry = lookup_one_len(META_FILENAME,
dtohd2(dentry), strlen (META_FILENAME));
+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
/* We need to create a META-file */
if(!meta_dentry->d_inode) {
@@ -527,9 +532,13 @@ int meta_write_r_entry(dentry_t *dentry,
goto out;
}
}
+
+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
meta_dentry = lookup_one_len(META_FILENAME,
dtohd2(dentry),
strlen (META_FILENAME));
+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
+
if(!meta_dentry->d_inode) {
/* We need to create a META-file */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
@@ -641,9 +650,14 @@ int meta_sync_d_list(dentry_t *dentry, i
goto out;
}
}
+
+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
meta_dentry = lookup_one_len(META_FILENAME,
dtohd2(dentry),
strlen(META_FILENAME));
+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
+
+
if(!meta_dentry->d_inode) {
/* We need to create a META-file */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
@@ -784,9 +798,13 @@ int meta_sync_r_list(dentry_t *dentry, i
goto out;
}
}
+
+ mutex_lock(&dtohd2(dentry)->d_inode->i_mutex);
meta_dentry = lookup_one_len(META_FILENAME,
dtohd2(dentry),
strlen(META_FILENAME));
+ mutex_unlock(&dtohd2(dentry)->d_inode->i_mutex);
+
if(!meta_dentry->d_inode) {
/* We need to create a META-file */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)