64035ac463
Prepare for better device categorization by moving everything to testing subdir first. [skip-ci]: chicken-egg problem: passing pmaports CI depends on pmbootstrap MR depends on this MR Related: postmarketos#16
101 lines
2.9 KiB
Diff
101 lines
2.9 KiB
Diff
From 71846fb0e72ac8f7c05ca85f28b50cae4703acfc Mon Sep 17 00:00:00 2001
|
|
From: Al Viro <viro@zeniv.linux.org.uk>
|
|
Date: Mon, 1 Jul 2019 23:47:19 +0300
|
|
Subject: [PATCH 1/5] cache the value of file_inode() in struct file
|
|
|
|
Note that this thing does *not* contribute to inode refcount;
|
|
it's pinned down by dentry.
|
|
|
|
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
|
|
---
|
|
fs/f2fs/f2fs.h | 3 ++-
|
|
fs/file_table.c | 2 ++
|
|
fs/open.c | 2 ++
|
|
include/linux/fs.h | 7 +++++++
|
|
4 files changed, 13 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
|
|
index 6ef8c890a57..2b511f8a416 100644
|
|
--- a/fs/f2fs/f2fs.h
|
|
+++ b/fs/f2fs/f2fs.h
|
|
@@ -1844,10 +1844,11 @@ static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
|
|
return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG);
|
|
}
|
|
|
|
+/* Implementation of file_inode added to include/linux/fs.h
|
|
static inline struct inode *file_inode(struct file *f)
|
|
{
|
|
return f->f_path.dentry->d_inode;
|
|
-}
|
|
+}*/
|
|
|
|
static inline bool is_dot_dotdot(const struct qstr *str)
|
|
{
|
|
diff --git a/fs/file_table.c b/fs/file_table.c
|
|
index a01710a6ff3..07838af0737 100644
|
|
--- a/fs/file_table.c
|
|
+++ b/fs/file_table.c
|
|
@@ -172,6 +172,7 @@ struct file *alloc_file(struct path *path, fmode_t mode,
|
|
return NULL;
|
|
|
|
file->f_path = *path;
|
|
+ file->f_inode = path->dentry->d_inode;
|
|
file->f_mapping = path->dentry->d_inode->i_mapping;
|
|
file->f_mode = mode;
|
|
file->f_op = fop;
|
|
@@ -254,6 +255,7 @@ static void __fput(struct file *file)
|
|
drop_file_write_access(file);
|
|
file->f_path.dentry = NULL;
|
|
file->f_path.mnt = NULL;
|
|
+ file->f_inode = NULL;
|
|
file_free(file);
|
|
dput(dentry);
|
|
mntput(mnt);
|
|
diff --git a/fs/open.c b/fs/open.c
|
|
index 3f716e9b896..2388e788e10 100644
|
|
--- a/fs/open.c
|
|
+++ b/fs/open.c
|
|
@@ -673,6 +673,7 @@ static struct file *__dentry_open(struct dentry *dentry, struct vfsmount *mnt,
|
|
f->f_mode = FMODE_PATH;
|
|
|
|
inode = dentry->d_inode;
|
|
+ f->f_inode = dentry->d_inode;
|
|
if (f->f_mode & FMODE_WRITE) {
|
|
error = __get_file_write_access(inode, mnt);
|
|
if (error)
|
|
@@ -748,6 +749,7 @@ cleanup_all:
|
|
}
|
|
f->f_path.dentry = NULL;
|
|
f->f_path.mnt = NULL;
|
|
+ f->f_inode = NULL;
|
|
cleanup_file:
|
|
put_filp(f);
|
|
dput(dentry);
|
|
diff --git a/include/linux/fs.h b/include/linux/fs.h
|
|
index ef6e82ce1c1..11265501da0 100644
|
|
--- a/include/linux/fs.h
|
|
+++ b/include/linux/fs.h
|
|
@@ -1029,6 +1029,7 @@ struct file {
|
|
struct path f_path;
|
|
#define f_dentry f_path.dentry
|
|
#define f_vfsmnt f_path.mnt
|
|
+ struct inode *f_inode; /* cached value */
|
|
const struct file_operations *f_op;
|
|
|
|
/*
|
|
@@ -2304,6 +2305,12 @@ static inline bool execute_ok(struct inode *inode)
|
|
return (inode->i_mode & S_IXUGO) || S_ISDIR(inode->i_mode);
|
|
}
|
|
|
|
+static inline struct inode *file_inode(struct file *f)
|
|
+{
|
|
+ /* return f->f_path.dentry->d_inode; / can also use this */
|
|
+ return f->f_inode;
|
|
+}
|
|
+
|
|
/*
|
|
* get_write_access() gets write permission for a file.
|
|
* put_write_access() releases this write permission.
|
|
--
|
|
2.20.1
|
|
|