staging: android: ashmem: lseek failed due to no FMODE_LSEEK.
vfs_llseek will check whether the file mode has FMODE_LSEEK, no return failure. But ashmem can be lseek, so add FMODE_LSEEK to ashmem file. Comment From Greg Hackmann: ashmem_llseek() passes the llseek() call through to the backing shmem file. 91360b02 ("ashmem: use vfs_llseek()") changed this from directly calling the file's llseek() op into a VFS layer call. This also adds a check for the FMODE_LSEEK bit, so without that bit ashmem_llseek() now always fails with -ESPIPE. Fixes: 91360b02 ("ashmem: use vfs_llseek()") Signed-off-by:Shuxiao Zhang <zhangshuxiao@xiaomi.com> Tested-by:
Greg Hackmann <ghackmann@google.com> Cc: stable <stable@vger.kernel.org> # 3.18+ Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
a6d36140
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