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authorAl Viro <viro@zeniv.linux.org.uk>2015-06-16 01:50:43 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2015-06-16 02:08:31 -0400
commita50e4a02ad6957ef6f77cccaa8ef6a337f1856af (patch)
tree876a4808bf70f0c698f43182ec06019f2511bcb3 /fs/ufs
parent514d748f69c97a51a2645eb198ac5c6218f22ff9 (diff)
downloadlinux-a50e4a02ad6957ef6f77cccaa8ef6a337f1856af.tar.bz2
ufs: don't bother with lock_ufs()/unlock_ufs() for directory access
We are already serialized by ->i_mutex and operations on different directories are independent. These calls are just rudiments of blind BKL conversion and they should've been removed back then. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ufs')
-rw-r--r--fs/ufs/namei.c54
1 files changed, 14 insertions, 40 deletions
diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c
index 60ee32249b72..3429079c11e2 100644
--- a/fs/ufs/namei.c
+++ b/fs/ufs/namei.c
@@ -56,11 +56,9 @@ static struct dentry *ufs_lookup(struct inode * dir, struct dentry *dentry, unsi
if (dentry->d_name.len > UFS_MAXNAMLEN)
return ERR_PTR(-ENAMETOOLONG);
- lock_ufs(dir->i_sb);
ino = ufs_inode_by_name(dir, &dentry->d_name);
if (ino)
inode = ufs_iget(dir->i_sb, ino);
- unlock_ufs(dir->i_sb);
return d_splice_alias(inode, dentry);
}
@@ -76,24 +74,16 @@ static int ufs_create (struct inode * dir, struct dentry * dentry, umode_t mode,
bool excl)
{
struct inode *inode;
- int err;
-
- UFSD("BEGIN\n");
inode = ufs_new_inode(dir, mode);
- err = PTR_ERR(inode);
+ if (IS_ERR(inode))
+ return PTR_ERR(inode);
- if (!IS_ERR(inode)) {
- inode->i_op = &ufs_file_inode_operations;
- inode->i_fop = &ufs_file_operations;
- inode->i_mapping->a_ops = &ufs_aops;
- mark_inode_dirty(inode);
- lock_ufs(dir->i_sb);
- err = ufs_add_nondir(dentry, inode);
- unlock_ufs(dir->i_sb);
- }
- UFSD("END: err=%d\n", err);
- return err;
+ inode->i_op = &ufs_file_inode_operations;
+ inode->i_fop = &ufs_file_operations;
+ inode->i_mapping->a_ops = &ufs_aops;
+ mark_inode_dirty(inode);
+ return ufs_add_nondir(dentry, inode);
}
static int ufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev)
@@ -110,9 +100,7 @@ static int ufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev
init_special_inode(inode, mode, rdev);
ufs_set_inode_dev(inode->i_sb, UFS_I(inode), rdev);
mark_inode_dirty(inode);
- lock_ufs(dir->i_sb);
err = ufs_add_nondir(dentry, inode);
- unlock_ufs(dir->i_sb);
}
return err;
}
@@ -121,18 +109,17 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry,
const char * symname)
{
struct super_block * sb = dir->i_sb;
- int err = -ENAMETOOLONG;
+ int err;
unsigned l = strlen(symname)+1;
struct inode * inode;
if (l > sb->s_blocksize)
- goto out_notlocked;
+ return -ENAMETOOLONG;
- lock_ufs(dir->i_sb);
inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
err = PTR_ERR(inode);
if (IS_ERR(inode))
- goto out;
+ return err;
if (l > UFS_SB(sb)->s_uspi->s_maxsymlinklen) {
/* slow symlink */
@@ -149,17 +136,13 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry,
}
mark_inode_dirty(inode);
- err = ufs_add_nondir(dentry, inode);
-out:
- unlock_ufs(dir->i_sb);
-out_notlocked:
- return err;
+ return ufs_add_nondir(dentry, inode);
out_fail:
inode_dec_link_count(inode);
unlock_new_inode(inode);
iput(inode);
- goto out;
+ return err;
}
static int ufs_link (struct dentry * old_dentry, struct inode * dir,
@@ -168,8 +151,6 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir,
struct inode *inode = d_inode(old_dentry);
int error;
- lock_ufs(dir->i_sb);
-
inode->i_ctime = CURRENT_TIME_SEC;
inode_inc_link_count(inode);
ihold(inode);
@@ -180,7 +161,6 @@ static int ufs_link (struct dentry * old_dentry, struct inode * dir,
iput(inode);
} else
d_instantiate(dentry, inode);
- unlock_ufs(dir->i_sb);
return error;
}
@@ -189,7 +169,6 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
struct inode * inode;
int err;
- lock_ufs(dir->i_sb);
inode_inc_link_count(dir);
inode = ufs_new_inode(dir, S_IFDIR|mode);
@@ -210,12 +189,10 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
err = ufs_add_link(dentry, inode);
if (err)
goto out_fail;
- unlock_ufs(dir->i_sb);
unlock_new_inode(inode);
d_instantiate(dentry, inode);
-out:
- return err;
+ return 0;
out_fail:
inode_dec_link_count(inode);
@@ -224,8 +201,7 @@ out_fail:
iput (inode);
out_dir:
inode_dec_link_count(dir);
- unlock_ufs(dir->i_sb);
- goto out;
+ return err;
}
static int ufs_unlink(struct inode *dir, struct dentry *dentry)
@@ -255,7 +231,6 @@ static int ufs_rmdir (struct inode * dir, struct dentry *dentry)
struct inode * inode = d_inode(dentry);
int err= -ENOTEMPTY;
- lock_ufs(dir->i_sb);
if (ufs_empty_dir (inode)) {
err = ufs_unlink(dir, dentry);
if (!err) {
@@ -264,7 +239,6 @@ static int ufs_rmdir (struct inode * dir, struct dentry *dentry)
inode_dec_link_count(dir);
}
}
- unlock_ufs(dir->i_sb);
return err;
}