replace BIG_FUSE_CHANNEL_SIZE with 'this->ctx->page_size'
replace BIG_FUSE_CHANNEL_SIZE with 'this->ctx->page_size'

Send the struct stat's  'blksize' variable same as GlusterFS's page-size,
instead of BIG_FUSE_CHANNEL_SIZE.

Signed-off-by: Anand V. Avati <6a1810c170bd423868ce2e225ecea39d80cade0f@amp.gluster.com>

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster