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export kernel_write(), convert open-coded instances

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Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2013-02-23 14:51:48 -05:00
commit 7bb307e894
5 changed files with 24 additions and 61 deletions
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34
drivers/mtd/nand/nandsim.c
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@ -1408,40 +1408,32 @@ static void clear_memalloc(int memalloc)
current->flags &= ~PF_MEMALLOC;
}
static ssize_t read_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
static ssize_t read_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t pos)
{
mm_segment_t old_fs;
ssize_t tx;
int err, memalloc;
err = get_pages(ns, file, count, *pos);
err = get_pages(ns, file, count, pos);
if (err)
return err;
old_fs = get_fs();
set_fs(get_ds());
memalloc = set_memalloc();
tx = vfs_read(file, (char __user *)buf, count, pos);
tx = kernel_read(file, pos, buf, count);
clear_memalloc(memalloc);
set_fs(old_fs);
put_pages(ns);
return tx;
}
static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t *pos)
static ssize_t write_file(struct nandsim *ns, struct file *file, void *buf, size_t count, loff_t pos)
{
mm_segment_t old_fs;
ssize_t tx;
int err, memalloc;
err = get_pages(ns, file, count, *pos);
err = get_pages(ns, file, count, pos);
if (err)
return err;
old_fs = get_fs();
set_fs(get_ds());
memalloc = set_memalloc();
tx = vfs_write(file, (char __user *)buf, count, pos);
tx = kernel_write(file, buf, count, pos);
clear_memalloc(memalloc);
set_fs(old_fs);
put_pages(ns);
return tx;
}
@ -1511,7 +1503,7 @@ static void read_page(struct nandsim *ns, int num)
if (do_read_error(ns, num))
return;
pos = (loff_t)ns->regs.row * ns->geom.pgszoob + ns->regs.column + ns->regs.off;
tx = read_file(ns, ns->cfile, ns->buf.byte, num, &pos);
tx = read_file(ns, ns->cfile, ns->buf.byte, num, pos);
if (tx != num) {
NS_ERR("read_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
return;
@ -1573,7 +1565,7 @@ static int prog_page(struct nandsim *ns, int num)
u_char *pg_off;
if (ns->cfile) {
loff_t off, pos;
loff_t off;
ssize_t tx;
int all;
@ -1585,8 +1577,7 @@ static int prog_page(struct nandsim *ns, int num)
memset(ns->file_buf, 0xff, ns->geom.pgszoob);
} else {
all = 0;
pos = off;
tx = read_file(ns, ns->cfile, pg_off, num, &pos);
tx = read_file(ns, ns->cfile, pg_off, num, off);
if (tx != num) {
NS_ERR("prog_page: read error for page %d ret %ld\n", ns->regs.row, (long)tx);
return -1;
@ -1595,16 +1586,15 @@ static int prog_page(struct nandsim *ns, int num)
for (i = 0; i < num; i++)
pg_off[i] &= ns->buf.byte[i];
if (all) {
pos = (loff_t)ns->regs.row * ns->geom.pgszoob;
tx = write_file(ns, ns->cfile, ns->file_buf, ns->geom.pgszoob, &pos);
loff_t pos = (loff_t)ns->regs.row * ns->geom.pgszoob;
tx = write_file(ns, ns->cfile, ns->file_buf, ns->geom.pgszoob, pos);
if (tx != ns->geom.pgszoob) {
NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
return -1;
}
ns->pages_written[ns->regs.row] = 1;
} else {
pos = off;
tx = write_file(ns, ns->cfile, pg_off, num, &pos);
tx = write_file(ns, ns->cfile, pg_off, num, off);
if (tx != num) {
NS_ERR("prog_page: write error for page %d ret %ld\n", ns->regs.row, (long)tx);
return -1;