UPSTREAM: f2fs: fix to wait dio completion

It should wait all existing dio write IOs before block removal,
otherwise, previous direct write IO may overwrite data in the
block which may be reused by other inode.

Cc: stable@vger.kernel.org
Change-Id: Icdd6e9a0233431faa88d80055e3973287342c7c4
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
(cherry picked from commit 96cfeb0389)
This commit is contained in:
Chao Yu 2024-06-27 15:17:11 +08:00 committed by Matthias Männich
parent 65ed348355
commit 540abf1e48

View File

@ -1062,6 +1062,13 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
return err;
}
/*
* wait for inflight dio, blocks should be removed after
* IO completion.
*/
if (attr->ia_size < old_size)
inode_dio_wait(inode);
f2fs_down_write(&fi->i_gc_rwsem[WRITE]);
filemap_invalidate_lock(inode->i_mapping);
@ -1898,6 +1905,12 @@ static long f2fs_fallocate(struct file *file, int mode,
if (ret)
goto out;
/*
* wait for inflight dio, blocks should be removed after IO
* completion.
*/
inode_dio_wait(inode);
if (mode & FALLOC_FL_PUNCH_HOLE) {
if (offset >= inode->i_size)
goto out;