lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

lift generic_write_checks() into callers of __generic_file_write_iter()

Browse Source 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2015-04-07 11:28:12 -04:00
parent 0b8def9d6d
commit 5f380c7fa7
5 changed files with 60 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
mm/filemap.c
View File

@@ -2560,19 +2560,9 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
ssize_t written = 0;
ssize_t err;
ssize_t status;
size_t count = iov_iter_count(from);
/* We can write back this queue in page reclaim */
current->backing_dev_info = inode_to_bdi(inode);
err = generic_write_checks(file, &iocb->ki_pos, &count, S_ISBLK(inode->i_mode));
if (err)
goto out;
if (count == 0)
goto out;
iov_iter_truncate(from, count);
err = file_remove_suid(file);
if (err)
goto out;
@@ -2651,9 +2641,14 @@ ssize_t generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
ssize_t ret;
size_t count = iov_iter_count(from);
mutex_lock(&inode->i_mutex);
ret = __generic_file_write_iter(iocb, from);
ret = generic_write_checks(file, &iocb->ki_pos, &count, 0);
if (!ret && count) {
iov_iter_truncate(from, count);
ret = __generic_file_write_iter(iocb, from);
}
mutex_unlock(&inode->i_mutex);
if (ret > 0) {