smb3: fix temporary data corruption in insert range

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insert range doesn't discard the affected cached region
so can risk temporarily corrupting file data.

Also includes some minor cleanup (avoiding rereading
inode size repeatedly unnecessarily) to make it clearer.

Cc: stable@vger.kernel.org
Fixes: 7fe6fe95b9 ("cifs: add FALLOC_FL_INSERT_RANGE support")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

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David Howells 2022-08-23 14:07:55 +01:00 • committed by Steve French

parent fa30a81f25

commit 9c8b7a293f

1 changed files with 16 additions and 8 deletions

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fs/cifs/smb2ops.c

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