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Subject[PATCH 7/7 linux-next] coda: ftoc validity check integration
Date
This patch moves cfi check in coda_ftoc() instead of repeating
it in the wild.

Module size
text data bss dec hex filename
28297 1040 700 30037 7555 fs/coda/coda.ko.before
28263 980 700 29943 74f7 fs/coda/coda.ko.after

Signed-off-by: Fabian Frederick <fabf@skynet.be>
---
fs/coda/cnode.c | 10 ++++++++++
fs/coda/coda_fs_i.h | 3 +--
fs/coda/dir.c | 6 ++----
fs/coda/file.c | 17 +++++------------
4 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c
index c42d340..36414438 100644
--- a/fs/coda/cnode.c
+++ b/fs/coda/cnode.c
@@ -148,6 +148,16 @@ struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb)
return inode;
}

+struct coda_file_info *coda_ftoc(struct file *file)
+{
+ struct coda_file_info *cfi = file->private_data;
+
+ BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+
+ return cfi;
+
+}
+
/* the CONTROL inode is made without asking attributes from Venus */
struct inode *coda_cnode_makectl(struct super_block *sb)
{
diff --git a/fs/coda/coda_fs_i.h b/fs/coda/coda_fs_i.h
index d702ba1a..c99d574 100644
--- a/fs/coda/coda_fs_i.h
+++ b/fs/coda/coda_fs_i.h
@@ -42,8 +42,6 @@ struct coda_file_info {
unsigned int cfi_mapcount; /* nr of times this file is mapped */
};

-#define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data))
-
/* flags */
#define C_VATTR 0x1 /* Validity of vattr in inode */
#define C_FLUSH 0x2 /* used after a flush */
@@ -54,6 +52,7 @@ struct inode *coda_cnode_make(struct CodaFid *, struct super_block *);
struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr);
struct inode *coda_cnode_makectl(struct super_block *sb);
struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb);
+struct coda_file_info *coda_ftoc(struct file *file);
void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *);

#endif
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 00876dd..3e80770 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -356,8 +356,7 @@ static int coda_venus_readdir(struct file *coda_file, struct dir_context *ctx)
ino_t ino;
int ret;

- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;

cii = ITOC(file_inode(coda_file));
@@ -426,8 +425,7 @@ static int coda_readdir(struct file *coda_file, struct dir_context *ctx)
struct file *host_file;
int ret;

- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;

if (host_file->f_op->iterate || host_file->f_op->iterate_shared) {
diff --git a/fs/coda/file.c b/fs/coda/file.c
index 1cbc1f2..55c22e2 100644
--- a/fs/coda/file.c
+++ b/fs/coda/file.c
@@ -31,9 +31,7 @@ static ssize_t
coda_file_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *coda_file = iocb->ki_filp;
- struct coda_file_info *cfi = CODA_FTOC(coda_file);
-
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ struct coda_file_info *cfi = coda_ftoc(coda_file);

return vfs_iter_read(cfi->cfi_container, to, &iocb->ki_pos, 0);
}
@@ -43,12 +41,10 @@ coda_file_write_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *coda_file = iocb->ki_filp;
struct inode *coda_inode = file_inode(coda_file);
- struct coda_file_info *cfi = CODA_FTOC(coda_file);
+ struct coda_file_info *cfi = coda_ftoc(coda_file);
struct file *host_file;
ssize_t ret;

- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
-
host_file = cfi->cfi_container;
file_start_write(host_file);
inode_lock(coda_inode);
@@ -69,8 +65,7 @@ coda_file_mmap(struct file *coda_file, struct vm_area_struct *vma)
struct file *host_file;
struct inode *coda_inode, *host_inode;

- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;

if (!host_file->f_op->mmap)
@@ -142,8 +137,7 @@ int coda_release(struct inode *coda_inode, struct file *coda_file)
struct inode *host_inode;
int err;

- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);

err = venus_close(coda_inode->i_sb, coda_i2f(coda_inode),
coda_flags, coda_file->f_cred->fsuid);
@@ -185,8 +179,7 @@ int coda_fsync(struct file *coda_file, loff_t start, loff_t end, int datasync)
return err;
inode_lock(coda_inode);

- cfi = CODA_FTOC(coda_file);
- BUG_ON(!cfi || cfi->cfi_magic != CODA_MAGIC);
+ cfi = coda_ftoc(coda_file);
host_file = cfi->cfi_container;

err = vfs_fsync(host_file, datasync);
--
2.4.11
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