6.1-stable review patch. If anyone has any objections, please let me know.
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From: David Howells dhowells@redhat.com
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: 7fe6fe95b936 ("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 --- fs/smb/client/smb2ops.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/fs/smb/client/smb2ops.c +++ b/fs/smb/client/smb2ops.c @@ -3858,6 +3858,9 @@ static long smb3_insert_range(struct fil 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;