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authorJes Sorensen <jes@sgi.com>2006-01-09 15:59:24 -0800
committerIngo Molnar <mingo@hera.kernel.org>2006-01-09 15:59:24 -0800
commit1b1dcc1b57a49136f118a0f16367256ff9994a69 (patch)
treeb0b36d4f41d28c9d6514fb309d33c1a084d6309b /fs/namespace.c
parent794ee1baee1c26be40410233e6c20bceb2b03c08 (diff)
downloadlwn-1b1dcc1b57a49136f118a0f16367256ff9994a69.tar.gz
lwn-1b1dcc1b57a49136f118a0f16367256ff9994a69.zip
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
This patch converts the inode semaphore to a mutex. I have tested it on XFS and compiled as much as one can consider on an ia64. Anyway your luck with it might be different. Modified-by: Ingo Molnar <mingo@elte.hu> (finished the conversion) Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/namespace.c')
-rw-r--r--fs/namespace.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 3e8fb61ad597..f0e353f5bc30 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -814,7 +814,7 @@ static int graft_tree(struct vfsmount *mnt, struct nameidata *nd)
return -ENOTDIR;
err = -ENOENT;
- down(&nd->dentry->d_inode->i_sem);
+ mutex_lock(&nd->dentry->d_inode->i_mutex);
if (IS_DEADDIR(nd->dentry->d_inode))
goto out_unlock;
@@ -826,7 +826,7 @@ static int graft_tree(struct vfsmount *mnt, struct nameidata *nd)
if (IS_ROOT(nd->dentry) || !d_unhashed(nd->dentry))
err = attach_recursive_mnt(mnt, nd, NULL);
out_unlock:
- up(&nd->dentry->d_inode->i_sem);
+ mutex_unlock(&nd->dentry->d_inode->i_mutex);
if (!err)
security_sb_post_addmount(mnt, nd);
return err;
@@ -962,7 +962,7 @@ static int do_move_mount(struct nameidata *nd, char *old_name)
goto out;
err = -ENOENT;
- down(&nd->dentry->d_inode->i_sem);
+ mutex_lock(&nd->dentry->d_inode->i_mutex);
if (IS_DEADDIR(nd->dentry->d_inode))
goto out1;
@@ -1004,7 +1004,7 @@ static int do_move_mount(struct nameidata *nd, char *old_name)
list_del_init(&old_nd.mnt->mnt_expire);
spin_unlock(&vfsmount_lock);
out1:
- up(&nd->dentry->d_inode->i_sem);
+ mutex_unlock(&nd->dentry->d_inode->i_mutex);
out:
up_write(&namespace_sem);
if (!err)
@@ -1573,7 +1573,7 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
user_nd.dentry = dget(current->fs->root);
read_unlock(&current->fs->lock);
down_write(&namespace_sem);
- down(&old_nd.dentry->d_inode->i_sem);
+ mutex_lock(&old_nd.dentry->d_inode->i_mutex);
error = -EINVAL;
if (IS_MNT_SHARED(old_nd.mnt) ||
IS_MNT_SHARED(new_nd.mnt->mnt_parent) ||
@@ -1626,7 +1626,7 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
path_release(&root_parent);
path_release(&parent_nd);
out2:
- up(&old_nd.dentry->d_inode->i_sem);
+ mutex_unlock(&old_nd.dentry->d_inode->i_mutex);
up_write(&namespace_sem);
path_release(&user_nd);
path_release(&old_nd);