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authorChristoph Hellwig <hch@lst.de>2017-05-27 11:16:52 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2017-06-29 17:49:23 -0400
commitabbb65899aecfc97bda64b6816d1e501754cfe1f (patch)
tree58b223fcbd886f93b75b98f3ac2807aa82e1c9e7 /fs/read_write.c
parent18e9710ee59ce3bd2a2512ddcd3f7ceebe8b8d17 (diff)
downloadlinux-abbb65899aecfc97bda64b6816d1e501754cfe1f.tar.bz2
fs: implement vfs_iter_write using do_iter_write
De-dupliate some code and allow for passing the flags argument to vfs_iter_write. Additionally it now properly updates timestamps. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/read_write.c')
-rw-r--r--fs/read_write.c29
1 files changed, 9 insertions, 20 deletions
diff --git a/fs/read_write.c b/fs/read_write.c
index 4dab30b62f0e..acfd3dc63d57 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -356,26 +356,6 @@ out_putf:
}
#endif
-ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos)
-{
- struct kiocb kiocb;
- ssize_t ret;
-
- if (!file->f_op->write_iter)
- return -EINVAL;
-
- init_sync_kiocb(&kiocb, file);
- kiocb.ki_pos = *ppos;
-
- iter->type |= WRITE;
- ret = call_write_iter(file, &kiocb, iter);
- BUG_ON(ret == -EIOCBQUEUED);
- if (ret > 0)
- *ppos = kiocb.ki_pos;
- return ret;
-}
-EXPORT_SYMBOL(vfs_iter_write);
-
int rw_verify_area(int read_write, struct file *file, const loff_t *ppos, size_t count)
{
struct inode *inode;
@@ -962,6 +942,15 @@ static ssize_t do_iter_write(struct file *file, struct iov_iter *iter,
return ret;
}
+ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos,
+ int flags)
+{
+ if (!file->f_op->write_iter)
+ return -EINVAL;
+ return do_iter_write(file, iter, ppos, flags);
+}
+EXPORT_SYMBOL(vfs_iter_write);
+
ssize_t vfs_readv(struct file *file, const struct iovec __user *vec,
unsigned long vlen, loff_t *pos, int flags)
{