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openwrt-xburst/target/linux/package/mini_fo/patches/102-mutex_change.patch

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fix 2.6.16 issues, from mini_fo git repository git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3533 3c298f89-4303-0410-b956-a3cf2f4a3e73
2006-03-29 01:58:27 +03:00
From: <mk@mary.denx.de>
Date: Tue, 24 Jan 2006 14:09:21 +0000 (+0100)
Subject: Support for new mutex infrastructure
X-Git-Url: http://www.denx.de/cgi-bin/gitweb.cgi?p=mini_fo.git;a=commitdiff;h=1dcc028729060ea83ea662155634b33ae8e2c493
Support for new mutex infrastructure
(7892f2f48d165a34b0b8130c8a195dfd807b8cb6)
---
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2006-01-24 Markus Klotzbuecher <mk@mary.denx.de>
+
+ * Add tons of ugly ifdefs to Ed L. Cashin's mutex patch to
+ retain backwards compatibility.
+
+2006-01-24 Ed L. Cashin <ecashin@coraid.com>
+
+ * Support for the new mutex infrastructure
+ (7892f2f48d165a34b0b8130c8a195dfd807b8cb6)
+
2005-10-15 Markus Klotzbuecher <mk@localhost.localdomain>
* Bugfix for a serious memory leak in mini_fo_follow_link.
--- a/aux.c
+++ b/aux.c
@@ -435,8 +435,11 @@ int build_sto_structure(dentry_t *dir, d
/* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
-
+#endif
/* lets be safe */
if(dtohd2(dir) != hidden_sto_dir_dentry) {
printk(KERN_CRIT "mini_fo: build_sto_structure: invalid parameter or meta data corruption [2].\n");
@@ -457,7 +460,11 @@ int build_sto_structure(dentry_t *dir, d
if(err) {
printk(KERN_CRIT "mini_fo: build_sto_structure: failed to create storage dir [1].\n");
/* was: unlock_dir(dir); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&dir->d_inode->i_mutex);
+#else
up(&dir->d_inode->i_sem);
+#endif
dput(dir);
return err;
}
@@ -466,7 +473,11 @@ int build_sto_structure(dentry_t *dir, d
if(!dtohd2(dentry)->d_inode) {
printk(KERN_CRIT "mini_fo: build_sto_structure: failed to create storage dir [2].\n");
/* was: unlock_dir(dir); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&dir->d_inode->i_mutex);
+#else
up(&dir->d_inode->i_sem);
+#endif
dput(dir);
return 1;
}
@@ -485,7 +496,11 @@ int build_sto_structure(dentry_t *dir, d
hidden_sto_dir_dentry->d_inode);
dir->d_inode->i_nlink++;
/* was: unlock_dir(hidden_sto_dir_dentry); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
return 0;
}
--- a/file.c
+++ b/file.c
@@ -613,18 +613,34 @@ mini_fo_fsync(file_t *file, dentry_t *de
if ((hidden_file = ftohf(file)) != NULL) {
hidden_dentry = dtohd(dentry);
if (hidden_file->f_op && hidden_file->f_op->fsync) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_dentry->d_inode->i_mutex);
+#else
down(&hidden_dentry->d_inode->i_sem);
+#endif
err1 = hidden_file->f_op->fsync(hidden_file, hidden_dentry, datasync);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
+#else
up(&hidden_dentry->d_inode->i_sem);
+#endif
}
}
if ((hidden_file = ftohf2(file)) != NULL) {
hidden_dentry = dtohd2(dentry);
if (hidden_file->f_op && hidden_file->f_op->fsync) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_dentry->d_inode->i_mutex);
+#else
down(&hidden_dentry->d_inode->i_sem);
+#endif
err2 = hidden_file->f_op->fsync(hidden_file, hidden_dentry, datasync);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
+#else
up(&hidden_dentry->d_inode->i_sem);
+#endif
}
}
else
--- a/inode.c
+++ b/inode.c
@@ -355,7 +355,11 @@ mini_fo_link(dentry_t *old_dentry, inode
/* was: hidden_dir_dentry = lock_parent(hidden_new_dentry); */
hidden_dir_dentry = dget(hidden_new_dentry->d_parent);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_dir_dentry->d_inode->i_sem);
+#endif
err = vfs_link(hidden_old_dentry,
hidden_dir_dentry->d_inode,
@@ -374,7 +378,11 @@ mini_fo_link(dentry_t *old_dentry, inode
out_lock:
/* was: unlock_dir(hidden_dir_dentry); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_dir_dentry);
dput(hidden_new_dentry);
@@ -452,7 +460,11 @@ mini_fo_symlink(inode_t *dir, dentry_t *
dget(hidden_sto_dentry);
/* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
mode = S_IALLUGO;
@@ -481,7 +493,11 @@ mini_fo_symlink(inode_t *dir, dentry_t *
out_lock:
/* was: unlock_dir(hidden_sto_dir_dentry); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
dput(hidden_sto_dentry);
@@ -524,7 +540,11 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
/* was:hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
/* avoid destroying the hidden inode if the file is in use */
dget(hidden_sto_dentry);
@@ -572,7 +592,11 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
dentry->d_name.len);
}
/* was: unlock_dir(hidden_sto_dir_dentry); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
goto out;
}
@@ -602,7 +626,12 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
/* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
/* avoid destroying the hidden inode if the file is in use */
dget(hidden_sto_dentry);
@@ -630,7 +659,11 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
dtopd(dentry)->state = NON_EXISTANT;
/* was: unlock_dir(hidden_sto_dir_dentry); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
goto out;
@@ -641,7 +674,12 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
/* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
/* avoid destroying the hidden inode if the file is in use */
dget(hidden_sto_dentry);
@@ -668,7 +706,12 @@ mini_fo_rmdir(inode_t *dir, dentry_t *de
dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink;
dtopd(dentry)->state = DELETED;
/* was: unlock_dir(hidden_sto_dir_dentry); */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
goto out;
}
@@ -1294,11 +1337,19 @@ mini_fo_getxattr(struct dentry *dentry,
encoded_name = (char *)name;
encoded_value = (char *)value;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_dentry->d_inode->i_mutex);
+#else
down(&hidden_dentry->d_inode->i_sem);
+#endif
/* lock_kernel() already done by caller. */
err = hidden_dentry->d_inode->i_op->getxattr(hidden_dentry, encoded_name, encoded_value, size);
/* unlock_kernel() will be done by caller. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_dentry->d_inode->i_mutex);
+#else
up(&hidden_dentry->d_inode->i_sem);
+#endif
}
return err;
}
@@ -1340,11 +1391,19 @@ mini_fo_setxattr(struct dentry *dentry,
encoded_name = (char *)name;
encoded_value = (char *)value;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_dentry->d_inode->i_mutex);
+#else
down(&hidden_dentry->d_inode->i_sem);
+#endif
/* lock_kernel() already done by caller. */
err = hidden_dentry->d_inode->i_op->setxattr(hidden_dentry, encoded_name, encoded_value, size, flags);
/* unlock_kernel() will be done by caller. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
+#else
up(&hidden_dentry->d_inode->i_sem);
+#endif
}
return err;
}
@@ -1372,11 +1431,19 @@ mini_fo_removexattr(struct dentry *dentr
if (hidden_dentry->d_inode->i_op->removexattr) {
encoded_name = (char *)name;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_dentry->d_inode->i_mutex);
+#else
down(&hidden_dentry->d_inode->i_sem);
+#endif
/* lock_kernel() already done by caller. */
err = hidden_dentry->d_inode->i_op->removexattr(hidden_dentry, encoded_name);
/* unlock_kernel() will be done by caller. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
+#else
up(&hidden_dentry->d_inode->i_sem);
+#endif
}
return err;
}
@@ -1403,11 +1470,20 @@ mini_fo_listxattr(struct dentry *dentry,
if (hidden_dentry->d_inode->i_op->listxattr) {
encoded_list = list;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_dentry->d_inode->i_mutex);
+#else
down(&hidden_dentry->d_inode->i_sem);
+#endif
/* lock_kernel() already done by caller. */
err = hidden_dentry->d_inode->i_op->listxattr(hidden_dentry, encoded_list, size);
/* unlock_kernel() will be done by caller. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
+#else
up(&hidden_dentry->d_inode->i_sem);
+#endif
}
return err;
}
--- a/meta.c
+++ b/meta.c
@@ -650,9 +650,20 @@ int meta_sync_d_list(dentry_t *dentry, i
struct iattr newattrs;
newattrs.ia_size = 0;
newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&meta_dentry->d_inode->i_mutex);
+#else
down(&meta_dentry->d_inode->i_sem);
+#endif
err = notify_change(meta_dentry, &newattrs);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&meta_dentry->d_inode->i_mutex);
+#else
up(&meta_dentry->d_inode->i_sem);
+#endif
+
if(err || meta_dentry->d_inode->i_size != 0) {
printk(KERN_CRIT "mini_fo: meta_sync_d_list: \
ERROR truncating meta file.\n");
@@ -780,9 +791,19 @@ int meta_sync_r_list(dentry_t *dentry, i
struct iattr newattrs;
newattrs.ia_size = 0;
newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&meta_dentry->d_inode->i_mutex);
+#else
down(&meta_dentry->d_inode->i_sem);
+#endif
err = notify_change(meta_dentry, &newattrs);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&meta_dentry->d_inode->i_mutex);
+#else
up(&meta_dentry->d_inode->i_sem);
+#endif
if(err || meta_dentry->d_inode->i_size != 0) {
printk(KERN_CRIT "mini_fo: meta_sync_r_list: \
ERROR truncating meta file.\n");
--- a/mini_fo.h
+++ b/mini_fo.h
@@ -433,6 +433,33 @@ fist_copy_attr_all(inode_t *dest, const
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
/* copied from linux/fs.h */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+static inline void double_lock(struct dentry *d1, struct dentry *d2)
+{
+ struct mutex *m1 = &d1->d_inode->i_mutex;
+ struct mutex *m2 = &d2->d_inode->i_mutex;
+ if (m1 != m2) {
+ if ((unsigned long) m1 < (unsigned long) m2) {
+ struct mutex *tmp = m2;
+ m2 = m1; m1 = tmp;
+ }
+ mutex_lock(m1);
+ }
+ mutex_lock(m2);
+}
+
+static inline void double_unlock(struct dentry *d1, struct dentry *d2)
+{
+ struct mutex *m1 = &d1->d_inode->i_mutex;
+ struct mutex *m2 = &d2->d_inode->i_mutex;
+ mutex_unlock(m1);
+ if (m1 != m2)
+ mutex_unlock(m2);
+ dput(d1);
+ dput(d2);
+}
+
+#else
static inline void double_down(struct semaphore *s1, struct semaphore *s2)
{
if (s1 != s2) {
@@ -463,8 +490,8 @@ static inline void double_unlock(struct
dput(d1);
dput(d2);
}
-
-#endif
+#endif /* if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) */
+#endif /* if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) */
#endif /* __KERNEL__ */
/*
--- a/mmap.c
+++ b/mmap.c
@@ -478,7 +478,11 @@ mini_fo_commit_write(file_t *file, page_
if (ftopd(file) != NULL)
hidden_file = ftohf(file);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_inode->i_mutex);
+#else
down(&hidden_inode->i_sem);
+#endif
/* find lower page (returns a locked page) */
hidden_page = grab_cache_page(hidden_inode->i_mapping, page->index);
if (!hidden_page)
@@ -556,7 +560,12 @@ mini_fo_commit_write(file_t *file, page_
ClearPageUptodate(page);
else
SetPageUptodate(page);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_inode->i_mutex);
+#else
up(&hidden_inode->i_sem);
+#endif
print_exit_status(err);
return err; /* assume all is ok */
}
--- a/state.c
+++ b/state.c
@@ -44,7 +44,12 @@ int create_sto_reg_file(dentry_t *dentry
/* lock parent */
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
err = PTR_ERR(hidden_sto_dir_dentry);
if (IS_ERR(hidden_sto_dir_dentry))
@@ -97,7 +102,11 @@ int create_sto_reg_file(dentry_t *dentry
hidden_sto_dir_dentry->d_inode);
out_lock:
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
out:
return err;
@@ -130,7 +139,12 @@ n");
/* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
err = PTR_ERR(hidden_sto_dir_dentry);
if (IS_ERR(hidden_sto_dir_dentry))
@@ -184,7 +198,11 @@ n");
out_lock:
/* was: unlock_dir(hidden_sto_dir_dentry); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
out:
return err;
@@ -217,7 +235,12 @@ int create_sto_nod(dentry_t *dentry, int
/* lock parent */
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
err = PTR_ERR(hidden_sto_dir_dentry);
if (IS_ERR(hidden_sto_dir_dentry))
@@ -260,7 +283,11 @@ int create_sto_nod(dentry_t *dentry, int
fist_copy_attr_timesizes(dir, hidden_sto_dir_dentry->d_inode);
out_lock:
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
out:
return err;
@@ -314,7 +341,12 @@ int nondir_unmod_to_mod(dentry_t *dentry
/* lock parent */
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
err = PTR_ERR(hidden_sto_dir_dentry);
if (IS_ERR(hidden_sto_dir_dentry))
@@ -365,7 +397,12 @@ int nondir_unmod_to_mod(dentry_t *dentry
if((cp_flag == 1) && S_ISREG(dentry->d_inode->i_mode)) {
/* unlock first */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
+
dput(hidden_sto_dir_dentry);
tgt_dentry = dtohd2(dentry);
@@ -383,7 +420,11 @@ int nondir_unmod_to_mod(dentry_t *dentry
}
out_lock:
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
out:
return err;
@@ -420,7 +461,12 @@ int nondir_creat_to_del(dentry_t *dentry
/* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
/* avoid destroying the hidden inode if the file is in use */
dget(hidden_sto_dentry);
@@ -435,7 +481,11 @@ int nondir_creat_to_del(dentry_t *dentry
dtost(dentry) = NON_EXISTANT;
/* was: unlock_dir(hidden_sto_dir_dentry); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
out:
@@ -464,7 +514,12 @@ int nondir_mod_to_del(dentry_t *dentry)
/* was hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
down(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
/* avoid destroying the hidden inode if the file is in use */
dget(hidden_sto_dentry);
@@ -488,7 +543,11 @@ int nondir_mod_to_del(dentry_t *dentry)
dentry->d_name.len);
/* was: unlock_dir(hidden_sto_dir_dentry); */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
+#else
up(&hidden_sto_dir_dentry->d_inode->i_sem);
+#endif
dput(hidden_sto_dir_dentry);
out:
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