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: [email protected] Signed-off-by: Chao Yu <[email protected]> --- fs/f2fs/file.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 76a6043caf27..f2d0e0de775f 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1056,6 +1056,13 @@ 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); @@ -1892,6 +1899,12 @@ 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; -- 2.40.1 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
