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Date: Thu, 29 Nov 2012 14:59:24 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Hugh Dickins <hughd@...gle.com>
Cc: "Theodore Ts'o" <tytso@....edu>, Zheng Liu <wenqing.lz@...bao.com>,
Jeff liu <jeff.liu@...cle.com>,
Jim Meyering <jim@...ering.net>,
Paul Eggert <eggert@...ucla.edu>,
Christoph Hellwig <hch@...radead.org>,
Josef Bacik <josef@...hat.com>,
Andi Kleen <andi@...stfloor.org>,
Andreas Dilger <adilger@...ger.ca>,
Dave Chinner <david@...morbit.com>,
Marco Stornelli <marco.stornelli@...il.com>,
Chris Mason <chris.mason@...ionio.com>,
Sunil Mushran <sunil.mushran@...cle.com>,
linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
linux-mm@...ck.org
Subject: Re: [PATCH] tmpfs: support SEEK_DATA and SEEK_HOLE (reprise)
On Wed, 28 Nov 2012 17:22:03 -0800 (PST)
Hugh Dickins <hughd@...gle.com> wrote:
> Revert 3.5's f21f8062201f ("tmpfs: revert SEEK_DATA and SEEK_HOLE")
> to reinstate 4fb5ef089b28 ("tmpfs: support SEEK_DATA and SEEK_HOLE"),
> with the intervening additional arg to generic_file_llseek_size().
>
> In 3.8, ext4 is expected to join btrfs, ocfs2 and xfs with proper
> SEEK_DATA and SEEK_HOLE support; and a good case has now been made
> for it on tmpfs, so let's join the party.
>
> It's quite easy for tmpfs to scan the radix_tree to support llseek's new
> SEEK_DATA and SEEK_HOLE options: so add them while the minutiae are still
> on my mind (in particular, the !PageUptodate-ness of pages fallocated but
> still unwritten).
>
> ...
>
> +/*
> + * llseek SEEK_DATA or SEEK_HOLE through the radix_tree.
> + */
> +static pgoff_t shmem_seek_hole_data(struct address_space *mapping,
> + pgoff_t index, pgoff_t end, int origin)
So I was starting at this wondering what on earth "origin" is and why
it has the fishy-in-this-context type "int".
There is a pretty well established convention that the lseek seek mode
is called "whence".
The below gets most of it. Too anal?
From: Andrew Morton <akpm@...ux-foundation.org>
Subject: lseek: the "whence" argument is called "whence"
But the kernel decided to call it "origin" instead. Fix most of the
sites.
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---
fs/bad_inode.c | 2 -
fs/block_dev.c | 4 +--
fs/btrfs/file.c | 16 +++++++-------
fs/ceph/dir.c | 4 +--
fs/ceph/file.c | 6 ++---
fs/cifs/cifsfs.c | 8 +++----
fs/configfs/dir.c | 4 +--
fs/ext3/dir.c | 6 ++---
fs/ext4/dir.c | 6 ++---
fs/ext4/file.c | 22 ++++++++++----------
fs/fuse/file.c | 8 +++----
fs/gfs2/file.c | 10 ++++-----
fs/libfs.c | 4 +--
fs/nfs/dir.c | 6 ++---
fs/nfs/file.c | 10 ++++-----
fs/ocfs2/extent_map.c | 12 +++++------
fs/ocfs2/file.c | 6 ++---
fs/pstore/inode.c | 6 ++---
fs/read_write.c | 40 ++++++++++++++++++-------------------
fs/seq_file.c | 4 +--
fs/ubifs/dir.c | 4 +--
include/linux/fs.h | 12 +++++------
include/linux/ftrace.h | 4 +--
include/linux/syscalls.h | 4 +--
kernel/trace/ftrace.c | 4 +--
mm/shmem.c | 20 +++++++++---------
26 files changed, 116 insertions(+), 116 deletions(-)
diff -puN fs/read_write.c~lseek-the-whence-argument-is-called-whence fs/read_write.c
--- a/fs/read_write.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/read_write.c
@@ -54,7 +54,7 @@ static loff_t lseek_execute(struct file
* generic_file_llseek_size - generic llseek implementation for regular files
* @file: file structure to seek on
* @offset: file offset to seek to
- * @origin: type of seek
+ * @whence: type of seek
* @size: max size of this file in file system
* @eof: offset used for SEEK_END position
*
@@ -67,12 +67,12 @@ static loff_t lseek_execute(struct file
* read/writes behave like SEEK_SET against seeks.
*/
loff_t
-generic_file_llseek_size(struct file *file, loff_t offset, int origin,
+generic_file_llseek_size(struct file *file, loff_t offset, int whence,
loff_t maxsize, loff_t eof)
{
struct inode *inode = file->f_mapping->host;
- switch (origin) {
+ switch (whence) {
case SEEK_END:
offset += eof;
break;
@@ -122,17 +122,17 @@ EXPORT_SYMBOL(generic_file_llseek_size);
* generic_file_llseek - generic llseek implementation for regular files
* @file: file structure to seek on
* @offset: file offset to seek to
- * @origin: type of seek
+ * @whence: type of seek
*
* This is a generic implemenation of ->llseek useable for all normal local
* filesystems. It just updates the file offset to the value specified by
- * @offset and @origin under i_mutex.
+ * @offset and @whence under i_mutex.
*/
-loff_t generic_file_llseek(struct file *file, loff_t offset, int origin)
+loff_t generic_file_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
- return generic_file_llseek_size(file, offset, origin,
+ return generic_file_llseek_size(file, offset, whence,
inode->i_sb->s_maxbytes,
i_size_read(inode));
}
@@ -142,32 +142,32 @@ EXPORT_SYMBOL(generic_file_llseek);
* noop_llseek - No Operation Performed llseek implementation
* @file: file structure to seek on
* @offset: file offset to seek to
- * @origin: type of seek
+ * @whence: type of seek
*
* This is an implementation of ->llseek useable for the rare special case when
* userspace expects the seek to succeed but the (device) file is actually not
* able to perform the seek. In this case you use noop_llseek() instead of
* falling back to the default implementation of ->llseek.
*/
-loff_t noop_llseek(struct file *file, loff_t offset, int origin)
+loff_t noop_llseek(struct file *file, loff_t offset, int whence)
{
return file->f_pos;
}
EXPORT_SYMBOL(noop_llseek);
-loff_t no_llseek(struct file *file, loff_t offset, int origin)
+loff_t no_llseek(struct file *file, loff_t offset, int whence)
{
return -ESPIPE;
}
EXPORT_SYMBOL(no_llseek);
-loff_t default_llseek(struct file *file, loff_t offset, int origin)
+loff_t default_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_path.dentry->d_inode;
loff_t retval;
mutex_lock(&inode->i_mutex);
- switch (origin) {
+ switch (whence) {
case SEEK_END:
offset += i_size_read(inode);
break;
@@ -216,7 +216,7 @@ out:
}
EXPORT_SYMBOL(default_llseek);
-loff_t vfs_llseek(struct file *file, loff_t offset, int origin)
+loff_t vfs_llseek(struct file *file, loff_t offset, int whence)
{
loff_t (*fn)(struct file *, loff_t, int);
@@ -225,11 +225,11 @@ loff_t vfs_llseek(struct file *file, lof
if (file->f_op && file->f_op->llseek)
fn = file->f_op->llseek;
}
- return fn(file, offset, origin);
+ return fn(file, offset, whence);
}
EXPORT_SYMBOL(vfs_llseek);
-SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, origin)
+SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence)
{
off_t retval;
struct fd f = fdget(fd);
@@ -237,8 +237,8 @@ SYSCALL_DEFINE3(lseek, unsigned int, fd,
return -EBADF;
retval = -EINVAL;
- if (origin <= SEEK_MAX) {
- loff_t res = vfs_llseek(f.file, offset, origin);
+ if (whence <= SEEK_MAX) {
+ loff_t res = vfs_llseek(f.file, offset, whence);
retval = res;
if (res != (loff_t)retval)
retval = -EOVERFLOW; /* LFS: should only happen on 32 bit platforms */
@@ -250,7 +250,7 @@ SYSCALL_DEFINE3(lseek, unsigned int, fd,
#ifdef __ARCH_WANT_SYS_LLSEEK
SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high,
unsigned long, offset_low, loff_t __user *, result,
- unsigned int, origin)
+ unsigned int, whence)
{
int retval;
struct fd f = fdget(fd);
@@ -260,11 +260,11 @@ SYSCALL_DEFINE5(llseek, unsigned int, fd
return -EBADF;
retval = -EINVAL;
- if (origin > SEEK_MAX)
+ if (whence > SEEK_MAX)
goto out_putf;
offset = vfs_llseek(f.file, ((loff_t) offset_high << 32) | offset_low,
- origin);
+ whence);
retval = (int)offset;
if (offset >= 0) {
diff -puN include/linux/fs.h~lseek-the-whence-argument-is-called-whence include/linux/fs.h
--- a/include/linux/fs.h~lseek-the-whence-argument-is-called-whence
+++ a/include/linux/fs.h
@@ -2291,9 +2291,9 @@ extern ino_t find_inode_number(struct de
#include <linux/err.h>
/* needed for stackable file system support */
-extern loff_t default_llseek(struct file *file, loff_t offset, int origin);
+extern loff_t default_llseek(struct file *file, loff_t offset, int whence);
-extern loff_t vfs_llseek(struct file *file, loff_t offset, int origin);
+extern loff_t vfs_llseek(struct file *file, loff_t offset, int whence);
extern int inode_init_always(struct super_block *, struct inode *);
extern void inode_init_once(struct inode *);
@@ -2403,11 +2403,11 @@ extern long do_splice_direct(struct file
extern void
file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
-extern loff_t noop_llseek(struct file *file, loff_t offset, int origin);
-extern loff_t no_llseek(struct file *file, loff_t offset, int origin);
-extern loff_t generic_file_llseek(struct file *file, loff_t offset, int origin);
+extern loff_t noop_llseek(struct file *file, loff_t offset, int whence);
+extern loff_t no_llseek(struct file *file, loff_t offset, int whence);
+extern loff_t generic_file_llseek(struct file *file, loff_t offset, int whence);
extern loff_t generic_file_llseek_size(struct file *file, loff_t offset,
- int origin, loff_t maxsize, loff_t eof);
+ int whence, loff_t maxsize, loff_t eof);
extern int generic_file_open(struct inode * inode, struct file * filp);
extern int nonseekable_open(struct inode * inode, struct file * filp);
diff -puN mm/shmem.c~lseek-the-whence-argument-is-called-whence mm/shmem.c
--- a/mm/shmem.c~lseek-the-whence-argument-is-called-whence
+++ a/mm/shmem.c
@@ -1714,7 +1714,7 @@ static ssize_t shmem_file_splice_read(st
* llseek SEEK_DATA or SEEK_HOLE through the radix_tree.
*/
static pgoff_t shmem_seek_hole_data(struct address_space *mapping,
- pgoff_t index, pgoff_t end, int origin)
+ pgoff_t index, pgoff_t end, int whence)
{
struct page *page;
struct pagevec pvec;
@@ -1728,13 +1728,13 @@ static pgoff_t shmem_seek_hole_data(stru
pvec.nr = shmem_find_get_pages_and_swap(mapping, index,
pvec.nr, pvec.pages, indices);
if (!pvec.nr) {
- if (origin == SEEK_DATA)
+ if (whence == SEEK_DATA)
index = end;
break;
}
for (i = 0; i < pvec.nr; i++, index++) {
if (index < indices[i]) {
- if (origin == SEEK_HOLE) {
+ if (whence == SEEK_HOLE) {
done = true;
break;
}
@@ -1746,8 +1746,8 @@ static pgoff_t shmem_seek_hole_data(stru
page = NULL;
}
if (index >= end ||
- (page && origin == SEEK_DATA) ||
- (!page && origin == SEEK_HOLE)) {
+ (page && whence == SEEK_DATA) ||
+ (!page && whence == SEEK_HOLE)) {
done = true;
break;
}
@@ -1760,15 +1760,15 @@ static pgoff_t shmem_seek_hole_data(stru
return index;
}
-static loff_t shmem_file_llseek(struct file *file, loff_t offset, int origin)
+static loff_t shmem_file_llseek(struct file *file, loff_t offset, int whence)
{
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
pgoff_t start, end;
loff_t new_offset;
- if (origin != SEEK_DATA && origin != SEEK_HOLE)
- return generic_file_llseek_size(file, offset, origin,
+ if (whence != SEEK_DATA && whence != SEEK_HOLE)
+ return generic_file_llseek_size(file, offset, whence,
MAX_LFS_FILESIZE, i_size_read(inode));
mutex_lock(&inode->i_mutex);
/* We're holding i_mutex so we can access i_size directly */
@@ -1780,12 +1780,12 @@ static loff_t shmem_file_llseek(struct f
else {
start = offset >> PAGE_CACHE_SHIFT;
end = (inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
- new_offset = shmem_seek_hole_data(mapping, start, end, origin);
+ new_offset = shmem_seek_hole_data(mapping, start, end, whence);
new_offset <<= PAGE_CACHE_SHIFT;
if (new_offset > offset) {
if (new_offset < inode->i_size)
offset = new_offset;
- else if (origin == SEEK_DATA)
+ else if (whence == SEEK_DATA)
offset = -ENXIO;
else
offset = inode->i_size;
diff -puN fs/bad_inode.c~lseek-the-whence-argument-is-called-whence fs/bad_inode.c
--- a/fs/bad_inode.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/bad_inode.c
@@ -16,7 +16,7 @@
#include <linux/poll.h>
-static loff_t bad_file_llseek(struct file *file, loff_t offset, int origin)
+static loff_t bad_file_llseek(struct file *file, loff_t offset, int whence)
{
return -EIO;
}
diff -puN fs/block_dev.c~lseek-the-whence-argument-is-called-whence fs/block_dev.c
--- a/fs/block_dev.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/block_dev.c
@@ -392,7 +392,7 @@ static int blkdev_write_end(struct file
* for a block special file file->f_path.dentry->d_inode->i_size is zero
* so we compute the size by hand (just as in block_read/write above)
*/
-static loff_t block_llseek(struct file *file, loff_t offset, int origin)
+static loff_t block_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *bd_inode = file->f_mapping->host;
loff_t size;
@@ -402,7 +402,7 @@ static loff_t block_llseek(struct file *
size = i_size_read(bd_inode);
retval = -EINVAL;
- switch (origin) {
+ switch (whence) {
case SEEK_END:
offset += size;
break;
diff -puN fs/libfs.c~lseek-the-whence-argument-is-called-whence fs/libfs.c
--- a/fs/libfs.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/libfs.c
@@ -81,11 +81,11 @@ int dcache_dir_close(struct inode *inode
return 0;
}
-loff_t dcache_dir_lseek(struct file *file, loff_t offset, int origin)
+loff_t dcache_dir_lseek(struct file *file, loff_t offset, int whence)
{
struct dentry *dentry = file->f_path.dentry;
mutex_lock(&dentry->d_inode->i_mutex);
- switch (origin) {
+ switch (whence) {
case 1:
offset += file->f_pos;
case 0:
diff -puN fs/seq_file.c~lseek-the-whence-argument-is-called-whence fs/seq_file.c
--- a/fs/seq_file.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/seq_file.c
@@ -300,14 +300,14 @@ EXPORT_SYMBOL(seq_read);
*
* Ready-made ->f_op->llseek()
*/
-loff_t seq_lseek(struct file *file, loff_t offset, int origin)
+loff_t seq_lseek(struct file *file, loff_t offset, int whence)
{
struct seq_file *m = file->private_data;
loff_t retval = -EINVAL;
mutex_lock(&m->lock);
m->version = file->f_version;
- switch (origin) {
+ switch (whence) {
case 1:
offset += file->f_pos;
case 0:
diff -puN include/linux/ftrace.h~lseek-the-whence-argument-is-called-whence include/linux/ftrace.h
--- a/include/linux/ftrace.h~lseek-the-whence-argument-is-called-whence
+++ a/include/linux/ftrace.h
@@ -394,7 +394,7 @@ ssize_t ftrace_filter_write(struct file
size_t cnt, loff_t *ppos);
ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf,
size_t cnt, loff_t *ppos);
-loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int origin);
+loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int whence);
int ftrace_regex_release(struct inode *inode, struct file *file);
void __init
@@ -559,7 +559,7 @@ static inline ssize_t ftrace_filter_writ
size_t cnt, loff_t *ppos) { return -ENODEV; }
static inline ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf,
size_t cnt, loff_t *ppos) { return -ENODEV; }
-static inline loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int origin)
+static inline loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int whence)
{
return -ENODEV;
}
diff -puN include/linux/syscalls.h~lseek-the-whence-argument-is-called-whence include/linux/syscalls.h
--- a/include/linux/syscalls.h~lseek-the-whence-argument-is-called-whence
+++ a/include/linux/syscalls.h
@@ -560,10 +560,10 @@ asmlinkage long sys_utime(char __user *f
asmlinkage long sys_utimes(char __user *filename,
struct timeval __user *utimes);
asmlinkage long sys_lseek(unsigned int fd, off_t offset,
- unsigned int origin);
+ unsigned int whence);
asmlinkage long sys_llseek(unsigned int fd, unsigned long offset_high,
unsigned long offset_low, loff_t __user *result,
- unsigned int origin);
+ unsigned int whence);
asmlinkage long sys_read(unsigned int fd, char __user *buf, size_t count);
asmlinkage long sys_readahead(int fd, loff_t offset, size_t count);
asmlinkage long sys_readv(unsigned long fd,
diff -puN kernel/trace/ftrace.c~lseek-the-whence-argument-is-called-whence kernel/trace/ftrace.c
--- a/kernel/trace/ftrace.c~lseek-the-whence-argument-is-called-whence
+++ a/kernel/trace/ftrace.c
@@ -2675,12 +2675,12 @@ ftrace_notrace_open(struct inode *inode,
}
loff_t
-ftrace_regex_lseek(struct file *file, loff_t offset, int origin)
+ftrace_regex_lseek(struct file *file, loff_t offset, int whence)
{
loff_t ret;
if (file->f_mode & FMODE_READ)
- ret = seq_lseek(file, offset, origin);
+ ret = seq_lseek(file, offset, whence);
else
file->f_pos = ret = 1;
diff -puN fs/btrfs/file.c~lseek-the-whence-argument-is-called-whence fs/btrfs/file.c
--- a/fs/btrfs/file.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/btrfs/file.c
@@ -2120,7 +2120,7 @@ out:
return ret;
}
-static int find_desired_extent(struct inode *inode, loff_t *offset, int origin)
+static int find_desired_extent(struct inode *inode, loff_t *offset, int whence)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
struct extent_map *em;
@@ -2154,7 +2154,7 @@ static int find_desired_extent(struct in
* before the position we want in case there is outstanding delalloc
* going on here.
*/
- if (origin == SEEK_HOLE && start != 0) {
+ if (whence == SEEK_HOLE && start != 0) {
if (start <= root->sectorsize)
em = btrfs_get_extent_fiemap(inode, NULL, 0, 0,
root->sectorsize, 0);
@@ -2188,13 +2188,13 @@ static int find_desired_extent(struct in
}
}
- if (origin == SEEK_HOLE) {
+ if (whence == SEEK_HOLE) {
*offset = start;
free_extent_map(em);
break;
}
} else {
- if (origin == SEEK_DATA) {
+ if (whence == SEEK_DATA) {
if (em->block_start == EXTENT_MAP_DELALLOC) {
if (start >= inode->i_size) {
free_extent_map(em);
@@ -2231,16 +2231,16 @@ out:
return ret;
}
-static loff_t btrfs_file_llseek(struct file *file, loff_t offset, int origin)
+static loff_t btrfs_file_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
int ret;
mutex_lock(&inode->i_mutex);
- switch (origin) {
+ switch (whence) {
case SEEK_END:
case SEEK_CUR:
- offset = generic_file_llseek(file, offset, origin);
+ offset = generic_file_llseek(file, offset, whence);
goto out;
case SEEK_DATA:
case SEEK_HOLE:
@@ -2249,7 +2249,7 @@ static loff_t btrfs_file_llseek(struct f
return -ENXIO;
}
- ret = find_desired_extent(inode, &offset, origin);
+ ret = find_desired_extent(inode, &offset, whence);
if (ret) {
mutex_unlock(&inode->i_mutex);
return ret;
diff -puN fs/ceph/dir.c~lseek-the-whence-argument-is-called-whence fs/ceph/dir.c
--- a/fs/ceph/dir.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/ceph/dir.c
@@ -454,7 +454,7 @@ static void reset_readdir(struct ceph_fi
fi->flags &= ~CEPH_F_ATEND;
}
-static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int origin)
+static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence)
{
struct ceph_file_info *fi = file->private_data;
struct inode *inode = file->f_mapping->host;
@@ -463,7 +463,7 @@ static loff_t ceph_dir_llseek(struct fil
mutex_lock(&inode->i_mutex);
retval = -EINVAL;
- switch (origin) {
+ switch (whence) {
case SEEK_END:
offset += inode->i_size + 2; /* FIXME */
break;
diff -puN fs/ceph/file.c~lseek-the-whence-argument-is-called-whence fs/ceph/file.c
--- a/fs/ceph/file.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/ceph/file.c
@@ -797,7 +797,7 @@ out:
/*
* llseek. be sure to verify file size on SEEK_END.
*/
-static loff_t ceph_llseek(struct file *file, loff_t offset, int origin)
+static loff_t ceph_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
int ret;
@@ -805,7 +805,7 @@ static loff_t ceph_llseek(struct file *f
mutex_lock(&inode->i_mutex);
__ceph_do_pending_vmtruncate(inode);
- if (origin == SEEK_END || origin == SEEK_DATA || origin == SEEK_HOLE) {
+ if (whence == SEEK_END || whence == SEEK_DATA || whence == SEEK_HOLE) {
ret = ceph_do_getattr(inode, CEPH_STAT_CAP_SIZE);
if (ret < 0) {
offset = ret;
@@ -813,7 +813,7 @@ static loff_t ceph_llseek(struct file *f
}
}
- switch (origin) {
+ switch (whence) {
case SEEK_END:
offset += inode->i_size;
break;
diff -puN fs/cifs/cifsfs.c~lseek-the-whence-argument-is-called-whence fs/cifs/cifsfs.c
--- a/fs/cifs/cifsfs.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/cifs/cifsfs.c
@@ -694,13 +694,13 @@ static ssize_t cifs_file_aio_write(struc
return written;
}
-static loff_t cifs_llseek(struct file *file, loff_t offset, int origin)
+static loff_t cifs_llseek(struct file *file, loff_t offset, int whence)
{
/*
- * origin == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
+ * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
* the cached file length
*/
- if (origin != SEEK_SET && origin != SEEK_CUR) {
+ if (whence != SEEK_SET && whence != SEEK_CUR) {
int rc;
struct inode *inode = file->f_path.dentry->d_inode;
@@ -727,7 +727,7 @@ static loff_t cifs_llseek(struct file *f
if (rc < 0)
return (loff_t)rc;
}
- return generic_file_llseek(file, offset, origin);
+ return generic_file_llseek(file, offset, whence);
}
static int cifs_setlease(struct file *file, long arg, struct file_lock **lease)
diff -puN fs/configfs/dir.c~lseek-the-whence-argument-is-called-whence fs/configfs/dir.c
--- a/fs/configfs/dir.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/configfs/dir.c
@@ -1613,12 +1613,12 @@ static int configfs_readdir(struct file
return 0;
}
-static loff_t configfs_dir_lseek(struct file * file, loff_t offset, int origin)
+static loff_t configfs_dir_lseek(struct file * file, loff_t offset, int whence)
{
struct dentry * dentry = file->f_path.dentry;
mutex_lock(&dentry->d_inode->i_mutex);
- switch (origin) {
+ switch (whence) {
case 1:
offset += file->f_pos;
case 0:
diff -puN fs/ext3/dir.c~lseek-the-whence-argument-is-called-whence fs/ext3/dir.c
--- a/fs/ext3/dir.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/ext3/dir.c
@@ -296,17 +296,17 @@ static inline loff_t ext3_get_htree_eof(
* NOTE: offsets obtained *before* ext3_set_inode_flag(dir, EXT3_INODE_INDEX)
* will be invalid once the directory was converted into a dx directory
*/
-loff_t ext3_dir_llseek(struct file *file, loff_t offset, int origin)
+loff_t ext3_dir_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
int dx_dir = is_dx_dir(inode);
loff_t htree_max = ext3_get_htree_eof(file);
if (likely(dx_dir))
- return generic_file_llseek_size(file, offset, origin,
+ return generic_file_llseek_size(file, offset, whence,
htree_max, htree_max);
else
- return generic_file_llseek(file, offset, origin);
+ return generic_file_llseek(file, offset, whence);
}
/*
diff -puN fs/ext4/dir.c~lseek-the-whence-argument-is-called-whence fs/ext4/dir.c
--- a/fs/ext4/dir.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/ext4/dir.c
@@ -334,17 +334,17 @@ static inline loff_t ext4_get_htree_eof(
*
* For non-htree, ext4_llseek already chooses the proper max offset.
*/
-loff_t ext4_dir_llseek(struct file *file, loff_t offset, int origin)
+loff_t ext4_dir_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
int dx_dir = is_dx_dir(inode);
loff_t htree_max = ext4_get_htree_eof(file);
if (likely(dx_dir))
- return generic_file_llseek_size(file, offset, origin,
+ return generic_file_llseek_size(file, offset, whence,
htree_max, htree_max);
else
- return ext4_llseek(file, offset, origin);
+ return ext4_llseek(file, offset, whence);
}
/*
diff -puN fs/ext4/file.c~lseek-the-whence-argument-is-called-whence fs/ext4/file.c
--- a/fs/ext4/file.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/ext4/file.c
@@ -303,7 +303,7 @@ static int ext4_file_open(struct inode *
* page cache has data or not.
*/
static int ext4_find_unwritten_pgoff(struct inode *inode,
- int origin,
+ int whence,
struct ext4_map_blocks *map,
loff_t *offset)
{
@@ -333,10 +333,10 @@ static int ext4_find_unwritten_pgoff(str
nr_pages = pagevec_lookup(&pvec, inode->i_mapping, index,
(pgoff_t)num);
if (nr_pages == 0) {
- if (origin == SEEK_DATA)
+ if (whence == SEEK_DATA)
break;
- BUG_ON(origin != SEEK_HOLE);
+ BUG_ON(whence != SEEK_HOLE);
/*
* If this is the first time to go into the loop and
* offset is not beyond the end offset, it will be a
@@ -352,7 +352,7 @@ static int ext4_find_unwritten_pgoff(str
* offset is smaller than the first page offset, it will be a
* hole at this offset.
*/
- if (lastoff == startoff && origin == SEEK_HOLE &&
+ if (lastoff == startoff && whence == SEEK_HOLE &&
lastoff < page_offset(pvec.pages[0])) {
found = 1;
break;
@@ -366,7 +366,7 @@ static int ext4_find_unwritten_pgoff(str
* If the current offset is not beyond the end of given
* range, it will be a hole.
*/
- if (lastoff < endoff && origin == SEEK_HOLE &&
+ if (lastoff < endoff && whence == SEEK_HOLE &&
page->index > end) {
found = 1;
*offset = lastoff;
@@ -391,10 +391,10 @@ static int ext4_find_unwritten_pgoff(str
do {
if (buffer_uptodate(bh) ||
buffer_unwritten(bh)) {
- if (origin == SEEK_DATA)
+ if (whence == SEEK_DATA)
found = 1;
} else {
- if (origin == SEEK_HOLE)
+ if (whence == SEEK_HOLE)
found = 1;
}
if (found) {
@@ -416,7 +416,7 @@ static int ext4_find_unwritten_pgoff(str
* The no. of pages is less than our desired, that would be a
* hole in there.
*/
- if (nr_pages < num && origin == SEEK_HOLE) {
+ if (nr_pages < num && whence == SEEK_HOLE) {
found = 1;
*offset = lastoff;
break;
@@ -609,7 +609,7 @@ static loff_t ext4_seek_hole(struct file
* by calling generic_file_llseek_size() with the appropriate maxbytes
* value for each.
*/
-loff_t ext4_llseek(struct file *file, loff_t offset, int origin)
+loff_t ext4_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
loff_t maxbytes;
@@ -619,11 +619,11 @@ loff_t ext4_llseek(struct file *file, lo
else
maxbytes = inode->i_sb->s_maxbytes;
- switch (origin) {
+ switch (whence) {
case SEEK_SET:
case SEEK_CUR:
case SEEK_END:
- return generic_file_llseek_size(file, offset, origin,
+ return generic_file_llseek_size(file, offset, whence,
maxbytes, i_size_read(inode));
case SEEK_DATA:
return ext4_seek_data(file, offset, maxbytes);
diff -puN fs/fuse/file.c~lseek-the-whence-argument-is-called-whence fs/fuse/file.c
--- a/fs/fuse/file.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/fuse/file.c
@@ -1699,19 +1699,19 @@ static sector_t fuse_bmap(struct address
return err ? 0 : outarg.block;
}
-static loff_t fuse_file_llseek(struct file *file, loff_t offset, int origin)
+static loff_t fuse_file_llseek(struct file *file, loff_t offset, int whence)
{
loff_t retval;
struct inode *inode = file->f_path.dentry->d_inode;
/* No i_mutex protection necessary for SEEK_CUR and SEEK_SET */
- if (origin == SEEK_CUR || origin == SEEK_SET)
- return generic_file_llseek(file, offset, origin);
+ if (whence == SEEK_CUR || whence == SEEK_SET)
+ return generic_file_llseek(file, offset, whence);
mutex_lock(&inode->i_mutex);
retval = fuse_update_attributes(inode, NULL, file, NULL);
if (!retval)
- retval = generic_file_llseek(file, offset, origin);
+ retval = generic_file_llseek(file, offset, whence);
mutex_unlock(&inode->i_mutex);
return retval;
diff -puN fs/gfs2/file.c~lseek-the-whence-argument-is-called-whence fs/gfs2/file.c
--- a/fs/gfs2/file.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/gfs2/file.c
@@ -44,7 +44,7 @@
* gfs2_llseek - seek to a location in a file
* @file: the file
* @offset: the offset
- * @origin: Where to seek from (SEEK_SET, SEEK_CUR, or SEEK_END)
+ * @whence: Where to seek from (SEEK_SET, SEEK_CUR, or SEEK_END)
*
* SEEK_END requires the glock for the file because it references the
* file's size.
@@ -52,26 +52,26 @@
* Returns: The new offset, or errno
*/
-static loff_t gfs2_llseek(struct file *file, loff_t offset, int origin)
+static loff_t gfs2_llseek(struct file *file, loff_t offset, int whence)
{
struct gfs2_inode *ip = GFS2_I(file->f_mapping->host);
struct gfs2_holder i_gh;
loff_t error;
- switch (origin) {
+ switch (whence) {
case SEEK_END: /* These reference inode->i_size */
case SEEK_DATA:
case SEEK_HOLE:
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY,
&i_gh);
if (!error) {
- error = generic_file_llseek(file, offset, origin);
+ error = generic_file_llseek(file, offset, whence);
gfs2_glock_dq_uninit(&i_gh);
}
break;
case SEEK_CUR:
case SEEK_SET:
- error = generic_file_llseek(file, offset, origin);
+ error = generic_file_llseek(file, offset, whence);
break;
default:
error = -EINVAL;
diff -puN fs/nfs/dir.c~lseek-the-whence-argument-is-called-whence fs/nfs/dir.c
--- a/fs/nfs/dir.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/nfs/dir.c
@@ -870,7 +870,7 @@ out:
return res;
}
-static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin)
+static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int whence)
{
struct dentry *dentry = filp->f_path.dentry;
struct inode *inode = dentry->d_inode;
@@ -879,10 +879,10 @@ static loff_t nfs_llseek_dir(struct file
dfprintk(FILE, "NFS: llseek dir(%s/%s, %lld, %d)\n",
dentry->d_parent->d_name.name,
dentry->d_name.name,
- offset, origin);
+ offset, whence);
mutex_lock(&inode->i_mutex);
- switch (origin) {
+ switch (whence) {
case 1:
offset += filp->f_pos;
case 0:
diff -puN fs/nfs/file.c~lseek-the-whence-argument-is-called-whence fs/nfs/file.c
--- a/fs/nfs/file.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/nfs/file.c
@@ -119,18 +119,18 @@ force_reval:
return __nfs_revalidate_inode(server, inode);
}
-loff_t nfs_file_llseek(struct file *filp, loff_t offset, int origin)
+loff_t nfs_file_llseek(struct file *filp, loff_t offset, int whence)
{
dprintk("NFS: llseek file(%s/%s, %lld, %d)\n",
filp->f_path.dentry->d_parent->d_name.name,
filp->f_path.dentry->d_name.name,
- offset, origin);
+ offset, whence);
/*
- * origin == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
+ * whence == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate
* the cached file length
*/
- if (origin != SEEK_SET && origin != SEEK_CUR) {
+ if (whence != SEEK_SET && whence != SEEK_CUR) {
struct inode *inode = filp->f_mapping->host;
int retval = nfs_revalidate_file_size(inode, filp);
@@ -138,7 +138,7 @@ loff_t nfs_file_llseek(struct file *filp
return (loff_t)retval;
}
- return generic_file_llseek(filp, offset, origin);
+ return generic_file_llseek(filp, offset, whence);
}
EXPORT_SYMBOL_GPL(nfs_file_llseek);
diff -puN fs/ocfs2/extent_map.c~lseek-the-whence-argument-is-called-whence fs/ocfs2/extent_map.c
--- a/fs/ocfs2/extent_map.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/ocfs2/extent_map.c
@@ -832,7 +832,7 @@ out:
return ret;
}
-int ocfs2_seek_data_hole_offset(struct file *file, loff_t *offset, int origin)
+int ocfs2_seek_data_hole_offset(struct file *file, loff_t *offset, int whence)
{
struct inode *inode = file->f_mapping->host;
int ret;
@@ -843,7 +843,7 @@ int ocfs2_seek_data_hole_offset(struct f
struct buffer_head *di_bh = NULL;
struct ocfs2_extent_rec rec;
- BUG_ON(origin != SEEK_DATA && origin != SEEK_HOLE);
+ BUG_ON(whence != SEEK_DATA && whence != SEEK_HOLE);
ret = ocfs2_inode_lock(inode, &di_bh, 0);
if (ret) {
@@ -859,7 +859,7 @@ int ocfs2_seek_data_hole_offset(struct f
}
if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
- if (origin == SEEK_HOLE)
+ if (whence == SEEK_HOLE)
*offset = inode->i_size;
goto out_unlock;
}
@@ -888,8 +888,8 @@ int ocfs2_seek_data_hole_offset(struct f
is_data = (rec.e_flags & OCFS2_EXT_UNWRITTEN) ? 0 : 1;
}
- if ((!is_data && origin == SEEK_HOLE) ||
- (is_data && origin == SEEK_DATA)) {
+ if ((!is_data && whence == SEEK_HOLE) ||
+ (is_data && whence == SEEK_DATA)) {
if (extoff > *offset)
*offset = extoff;
goto out_unlock;
@@ -899,7 +899,7 @@ int ocfs2_seek_data_hole_offset(struct f
cpos += clen;
}
- if (origin == SEEK_HOLE) {
+ if (whence == SEEK_HOLE) {
extoff = cpos;
extoff <<= cs_bits;
extlen = clen;
diff -puN fs/ocfs2/file.c~lseek-the-whence-argument-is-called-whence fs/ocfs2/file.c
--- a/fs/ocfs2/file.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/ocfs2/file.c
@@ -2637,14 +2637,14 @@ bail:
}
/* Refer generic_file_llseek_unlocked() */
-static loff_t ocfs2_file_llseek(struct file *file, loff_t offset, int origin)
+static loff_t ocfs2_file_llseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
int ret = 0;
mutex_lock(&inode->i_mutex);
- switch (origin) {
+ switch (whence) {
case SEEK_SET:
break;
case SEEK_END:
@@ -2659,7 +2659,7 @@ static loff_t ocfs2_file_llseek(struct f
break;
case SEEK_DATA:
case SEEK_HOLE:
- ret = ocfs2_seek_data_hole_offset(file, &offset, origin);
+ ret = ocfs2_seek_data_hole_offset(file, &offset, whence);
if (ret)
goto out;
break;
diff -puN fs/pstore/inode.c~lseek-the-whence-argument-is-called-whence fs/pstore/inode.c
--- a/fs/pstore/inode.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/pstore/inode.c
@@ -151,13 +151,13 @@ static int pstore_file_open(struct inode
return 0;
}
-static loff_t pstore_file_llseek(struct file *file, loff_t off, int origin)
+static loff_t pstore_file_llseek(struct file *file, loff_t off, int whence)
{
struct seq_file *sf = file->private_data;
if (sf->op)
- return seq_lseek(file, off, origin);
- return default_llseek(file, off, origin);
+ return seq_lseek(file, off, whence);
+ return default_llseek(file, off, whence);
}
static const struct file_operations pstore_file_operations = {
diff -puN fs/ubifs/dir.c~lseek-the-whence-argument-is-called-whence fs/ubifs/dir.c
--- a/fs/ubifs/dir.c~lseek-the-whence-argument-is-called-whence
+++ a/fs/ubifs/dir.c
@@ -453,11 +453,11 @@ out:
}
/* If a directory is seeked, we have to free saved readdir() state */
-static loff_t ubifs_dir_llseek(struct file *file, loff_t offset, int origin)
+static loff_t ubifs_dir_llseek(struct file *file, loff_t offset, int whence)
{
kfree(file->private_data);
file->private_data = NULL;
- return generic_file_llseek(file, offset, origin);
+ return generic_file_llseek(file, offset, whence);
}
/* Free saved readdir() state when the directory is closed */
_
--
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