cifs: create a helper to find a writeable handle by path name

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rename() takes a path for old_file and in SMB2 we used to just create
a compound for create(old_path)/rename/close().
If we already have a writable handle we can avoid the create() and close()
altogether and just use the existing handle.

For this situation, as we avoid doing the create()
we also avoid triggering an oplock break for the existing handle.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

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Ronnie Sahlberg 2019-08-30 08:25:46 +10:00 • committed by Steve French

parent 31ebdc1134

commit 8de9e86c67

4 changed files with 106 additions and 27 deletions

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2

fs/cifs/cifsproto.h

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2

fs/cifs/dir.c

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35

fs/cifs/file.c

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92

fs/cifs/smb2inode.c

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