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Subject[PATCH 28/32] Unionfs: use file f_path field
Date
From: Erez Zadok <ezk@cs.sunysb.edu>

Start using file->f_path.dentry instead of file->f_dentry

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
---
fs/unionfs/commonfops.c | 42 ++++++++++++++++++++----------------------
fs/unionfs/dirfops.c | 6 +++---
fs/unionfs/mmap.c | 5 ++---
fs/unionfs/rdstate.c | 2 +-
4 files changed, 26 insertions(+), 29 deletions(-)
diff --git a/fs/unionfs/commonfops.c b/fs/unionfs/commonfops.c
index eee68b8..341b6f2 100644
--- a/fs/unionfs/commonfops.c
+++ b/fs/unionfs/commonfops.c
@@ -158,7 +158,7 @@ static int open_all_files(struct file *file)
int bindex, bstart, bend, err = 0;
struct file *lower_file;
struct dentry *lower_dentry;
- struct dentry *dentry = file->f_dentry;
+ struct dentry *dentry = file->f_path.dentry;
struct super_block *sb = dentry->d_sb;

bstart = dbstart(dentry);
@@ -193,8 +193,7 @@ static int open_highest_file(struct file *file, int willwrite)
int bindex, bstart, bend, err = 0;
struct file *lower_file;
struct dentry *lower_dentry;
-
- struct dentry *dentry = file->f_dentry;
+ struct dentry *dentry = file->f_path.dentry;
struct inode *parent_inode = dentry->d_parent->d_inode;
struct super_block *sb = dentry->d_sb;
size_t inode_size = dentry->d_inode->i_size;
@@ -302,10 +301,9 @@ int unionfs_file_revalidate(struct file *file, int willwrite)
int sbgen, fgen, dgen;
int bstart, bend;
int size;
-
int err = 0;

- dentry = file->f_dentry;
+ dentry = file->f_path.dentry;
unionfs_lock_dentry(dentry);
sb = dentry->d_sb;

@@ -412,20 +410,20 @@ static int __open_dir(struct inode *inode, struct file *file)
struct file *lower_file;
int bindex, bstart, bend;

- bstart = fbstart(file) = dbstart(file->f_dentry);
- bend = fbend(file) = dbend(file->f_dentry);
+ bstart = fbstart(file) = dbstart(file->f_path.dentry);
+ bend = fbend(file) = dbend(file->f_path.dentry);

for (bindex = bstart; bindex <= bend; bindex++) {
lower_dentry =
- unionfs_lower_dentry_idx(file->f_dentry, bindex);
+ unionfs_lower_dentry_idx(file->f_path.dentry, bindex);
if (!lower_dentry)
continue;

dget(lower_dentry);
- unionfs_mntget(file->f_dentry, bindex);
+ unionfs_mntget(file->f_path.dentry, bindex);
lower_file = dentry_open(lower_dentry,
- unionfs_lower_mnt_idx(file->f_dentry,
- bindex),
+ unionfs_lower_mnt_idx(file->f_path.dentry,
+ bindex),
file->f_flags);
if (IS_ERR(lower_file))
return PTR_ERR(lower_file);
@@ -450,17 +448,17 @@ static int __open_file(struct inode *inode, struct file *file)
int lower_flags;
int bindex, bstart, bend;

- lower_dentry = unionfs_lower_dentry(file->f_dentry);
+ lower_dentry = unionfs_lower_dentry(file->f_path.dentry);
lower_flags = file->f_flags;

- bstart = fbstart(file) = dbstart(file->f_dentry);
- bend = fbend(file) = dbend(file->f_dentry);
+ bstart = fbstart(file) = dbstart(file->f_path.dentry);
+ bend = fbend(file) = dbend(file->f_path.dentry);

/*
* check for the permission for lower file. If the error is
* COPYUP_ERR, copyup the file.
*/
- if (lower_dentry->d_inode && is_robranch(file->f_dentry)) {
+ if (lower_dentry->d_inode && is_robranch(file->f_path.dentry)) {
/*
* if the open will change the file, copy it up otherwise
* defer it.
@@ -472,7 +470,7 @@ static int __open_file(struct inode *inode, struct file *file)
/* copyup the file */
for (bindex = bstart - 1; bindex >= 0; bindex--) {
err = copyup_file(
- file->f_dentry->d_parent->d_inode,
+ file->f_path.dentry->d_parent->d_inode,
file, bstart, bindex, size);
if (!err)
break;
@@ -488,10 +486,10 @@ static int __open_file(struct inode *inode, struct file *file)
* dentry_open will decrement mnt refcnt if err.
* otherwise fput() will do an mntput() for us upon file close.
*/
- unionfs_mntget(file->f_dentry, bstart);
+ unionfs_mntget(file->f_path.dentry, bstart);
lower_file =
dentry_open(lower_dentry,
- unionfs_lower_mnt_idx(file->f_dentry, bstart),
+ unionfs_lower_mnt_idx(file->f_path.dentry, bstart),
lower_flags);
if (IS_ERR(lower_file))
return PTR_ERR(lower_file);
@@ -536,7 +534,7 @@ int unionfs_open(struct inode *inode, struct file *file)
goto out;
}

- dentry = file->f_dentry;
+ dentry = file->f_path.dentry;
unionfs_lock_dentry(dentry);

bstart = fbstart(file) = dbstart(dentry);
@@ -562,7 +560,7 @@ int unionfs_open(struct inode *inode, struct file *file)
if (!lower_file)
continue;

- branchput(file->f_dentry->d_sb, bindex);
+ branchput(file->f_path.dentry->d_sb, bindex);
/* fput calls dput for lower_dentry */
fput(lower_file);
}
@@ -604,7 +602,7 @@ int unionfs_file_release(struct inode *inode, struct file *file)
if ((err = unionfs_file_revalidate(file, 1)))
goto out;
fileinfo = UNIONFS_F(file);
- BUG_ON(file->f_dentry->d_inode != inode);
+ BUG_ON(file->f_path.dentry->d_inode != inode);
inodeinfo = UNIONFS_I(inode);

/* fput all the lower files */
@@ -664,7 +662,7 @@ static long do_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
err = lower_file->f_op->unlocked_ioctl(lower_file, cmd, arg);
} else if (lower_file->f_op->ioctl) {
lock_kernel();
- err = lower_file->f_op->ioctl(lower_file->f_dentry->d_inode,
+ err = lower_file->f_op->ioctl(lower_file->f_path.dentry->d_inode,
lower_file, cmd, arg);
unlock_kernel();
}
diff --git a/fs/unionfs/dirfops.c b/fs/unionfs/dirfops.c
index 0e93bd7..980f125 100644
--- a/fs/unionfs/dirfops.c
+++ b/fs/unionfs/dirfops.c
@@ -102,7 +102,7 @@ static int unionfs_readdir(struct file *file, void *dirent, filldir_t filldir)
if ((err = unionfs_file_revalidate(file, 0)))
goto out;

- inode = file->f_dentry->d_inode;
+ inode = file->f_path.dentry->d_inode;

uds = UNIONFS_F(file)->rdstate;
if (!uds) {
@@ -156,7 +156,7 @@ static int unionfs_readdir(struct file *file, void *dirent, filldir_t filldir)
uds->dirpos = offset;

/* Copy the atime. */
- fsstack_copy_attr_atime(inode, lower_file->f_dentry->d_inode);
+ fsstack_copy_attr_atime(inode, lower_file->f_path.dentry->d_inode);

if (err < 0)
goto out;
@@ -239,7 +239,7 @@ static loff_t unionfs_dir_llseek(struct file *file, loff_t offset, int origin)
else
err = -EINVAL;
} else {
- rdstate = find_rdstate(file->f_dentry->d_inode,
+ rdstate = find_rdstate(file->f_path.dentry->d_inode,
offset);
if (rdstate) {
UNIONFS_F(file)->rdstate = rdstate;
diff --git a/fs/unionfs/mmap.c b/fs/unionfs/mmap.c
index d26b572..e05e6a2 100644
--- a/fs/unionfs/mmap.c
+++ b/fs/unionfs/mmap.c
@@ -229,7 +229,7 @@ static int unionfs_readpage(struct file *file, struct page *page)
*/
out:
unlock_page(page);
- unionfs_read_unlock(file->f_dentry->d_sb);
+ unionfs_read_unlock(file->f_path.dentry->d_sb);

return err;
}
@@ -271,8 +271,7 @@ static int unionfs_commit_write(struct file *file, struct page *page,

BUG_ON(file == NULL);

- unionfs_read_lock(file->f_dentry->d_sb);
-
+ unionfs_read_lock(file->f_path.dentry->d_sb);
if ((err = unionfs_file_revalidate(file, 1)))
goto out;

diff --git a/fs/unionfs/rdstate.c b/fs/unionfs/rdstate.c
index 5fc242e..0a18d5c 100644
--- a/fs/unionfs/rdstate.c
+++ b/fs/unionfs/rdstate.c
@@ -91,7 +91,7 @@ int init_rdstate(struct file *file)
(sizeof(unsigned int) + sizeof(unsigned int)));
BUG_ON(UNIONFS_F(file)->rdstate != NULL);

- UNIONFS_F(file)->rdstate = alloc_rdstate(file->f_dentry->d_inode,
+ UNIONFS_F(file)->rdstate = alloc_rdstate(file->f_path.dentry->d_inode,
fbstart(file));

return (UNIONFS_F(file)->rdstate ? 0 : -ENOMEM);
--
1.5.2.2.238.g7cbf2f2
-
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