]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
cifs: fix fallocate when trying to allocate a hole.
authorRonnie Sahlberg <lsahlber@redhat.com>
Fri, 23 Jul 2021 01:21:24 +0000 (11:21 +1000)
committerSteve French <stfrench@microsoft.com>
Fri, 23 Jul 2021 02:24:22 +0000 (21:24 -0500)
commit488968a8945c119859d91bb6a8dc13bf50002f15
treee1ba134c928ddc08a1453c9067ab67c8861d8c79
parent7b09d4e0be94968b7c6c117e34ca90cea9c6d986
cifs: fix fallocate when trying to allocate a hole.

Remove the conditional checking for out_data_len and skipping the fallocate
if it is 0. This is wrong will actually change any legitimate the fallocate
where the entire region is unallocated into a no-op.

Additionally, before allocating the range, if FALLOC_FL_KEEP_SIZE is set then
we need to clamp the length of the fallocate region as to not extend the size of the file.

Fixes: 966a3cb7c7db ("cifs: improve fallocate emulation")
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
fs/cifs/smb2ops.c