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cifs: Fix FALLOC_FL_INSERT_RANGE by setting i_size after EOF moved 

commit 88010155f02b2c3b03c71609ba6ceeb457ece095 upstream.

Fix the cifs filesystem implementations of FALLOC_FL_INSERT_RANGE, in
smb3_insert_range(), to set i_size after extending the file on the server
and before we do the copy to open the gap (as we don't clean up the EOF
marker if the copy fails).

Fixes: 7fe6fe95b9 ("cifs: add FALLOC_FL_INSERT_RANGE support")
Cc: stable@vger.kernel.org
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paulo Alcantara <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-mm@kvack.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Howells 2023-11-29 16:56:18 +00:00 committed by Greg Kroah-Hartman
parent 9b7e8fa648
commit 514f89a359
1 changed files with 3 additions and 0 deletions
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3
fs/smb/client/smb2ops.c
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@ -3739,6 +3739,9 @@ static long smb3_insert_range(struct file *file, struct cifs_tcon *tcon,
if (rc < 0)
goto out_2;
truncate_setsize(inode, old_eof + len);
fscache_resize_cookie(cifs_inode_cookie(inode), i_size_read(inode));
rc = smb2_copychunk_range(xid, cfile, cfile, off, count, off + len);
if (rc < 0)
goto out_2;